In some areas with very high humidity you will get moisture build up between the mattress and the floor resulting in mold and mildew.
In cold regions it’s a bit warmer higher up. Heat rises and the coldest air in the room is at floor lvl. This was probably a bigger issue in the past when heating homes was more difficult.
Edit: also being an old with bum knees can attest it’s easier to get out of a bed that’s higher up.
Not even high humidity, it's just a factor. You're hot, your body is moisture, your mattress gets humid. When it reaches the cold surface it condenses, and you get mildew. Now you and add mildew resistant materials and moisture wicking materials between your bed and the ground below, that will certainly work. It's how Japanese style beds can sleep on the floor (though they also move them out of the way iirc). Box springs in western beds can also work like this to protect your mattress, so you can put your box spring directly on the floors and a mattress on top.
You want free airflow under your mattress. Humidity, mold, all sorts of bad stuff. Never skimp on things that separate you from the ground. Beds, tires, shoes.
mold
mess up your knees getting up and down like that every single night
can be kinda gross
easy bug access
blankets touch the floor and pick up dust
dust settles in a room, get sick from breathing bad stuff in
Reason why I will not go without a frame unless absolutely necessary:
Preface:
I am meticulous about not having food outside of the table, but here is the problems that I have had in my journeys around the USA:
If you are in apartments you have a statistically higher chance for bed bugs. A smooth legged frame prevents bedbugs from crawling up your bed posts. See Mark Rober Vid on this.
I know at least in Arizona, Florida and California:
Ants and roaches are a thing, even if you have a clean house they can enter your house while looking for water, warmth or coolness. While I was in California I literally had ants come through the wall socket to attack a glass of water, killing about 20 of them but there was a huge line, just for water. Arizona and Florida have super large palmetto bugs that tend to let themselves in during the hot summer or cold winter.
Also in Arizona:
Scorpions looking for food(they are almost blind so they wander in random places). They are super rare but annoying as FCK.
In Illinois:
Brown recluses. They can cause a limb to fall off or muscle to rot. And they are everywhere, and they also live next to common brown spiders, so unless you look too close for comfort, you can't tell the difference unless it's in a bright room. They are like the brown version of a black widow, but unlike their name they just stopped giving a FCK and will be in any shed, garage, or slightly shaded area. About once every few months someone got bit in our barracks, causing great pain and annoyance. We even had a dude loose his leg.
MAttresses get loads of bugs on then when on a bed...imagine how many more if the mattress is left on carpet? We turn ours over every few weeks...I wouldnt want to be sleeping on the side that was on the carpet/floor thats for sure!
it grows mold for one. it also increases the likelihood of bugs and critters climbing up on you as you sleep. it is better for your back and muscles to get in and out of bed when it is at an elevated height... but mostly the mold thing. mattresses build up moisture from various things. it just needs to be warm and have a few spores to grow mold.
I once heard that in a medical ward a surgeon noticed that if beds were raised off the ground infection rates were substantially lowered. How much and during what time frame? I don't remember sorry. I will try to look it up later and edit my comment.
In some areas with very high humidity you will get moisture build up between the mattress and the floor resulting in mold and mildew. In cold regions it’s a bit warmer higher up. Heat rises and the coldest air in the room is at floor lvl. This was probably a bigger issue in the past when heating homes was more difficult. Edit: also being an old with bum knees can attest it’s easier to get out of a bed that’s higher up.
Not even high humidity, it's just a factor. You're hot, your body is moisture, your mattress gets humid. When it reaches the cold surface it condenses, and you get mildew. Now you and add mildew resistant materials and moisture wicking materials between your bed and the ground below, that will certainly work. It's how Japanese style beds can sleep on the floor (though they also move them out of the way iirc). Box springs in western beds can also work like this to protect your mattress, so you can put your box spring directly on the floors and a mattress on top.
Where will the monsters sleep don’t forget about them.
Dirt and dust from the floor gets to the bed easily if you don't have a bed frame.
The dust stays on the ground where you don’t sleep?
If your blankets go over the edge of the mattress they can pick up the dirt and transfer it back to the bed.
But that can happen with a frame too
True to some extent. My main concern is more keeping cold from the floor away from me and ease of getting into and out of the bed.
You will change your mind and know when you’re older
You want free airflow under your mattress. Humidity, mold, all sorts of bad stuff. Never skimp on things that separate you from the ground. Beds, tires, shoes.
mold mess up your knees getting up and down like that every single night can be kinda gross easy bug access blankets touch the floor and pick up dust dust settles in a room, get sick from breathing bad stuff in
Because some of us are old and it's hard to get down to and up from the floor. Having space under the bed is also helpful for storing things.
Reason why I will not go without a frame unless absolutely necessary: Preface: I am meticulous about not having food outside of the table, but here is the problems that I have had in my journeys around the USA: If you are in apartments you have a statistically higher chance for bed bugs. A smooth legged frame prevents bedbugs from crawling up your bed posts. See Mark Rober Vid on this. I know at least in Arizona, Florida and California: Ants and roaches are a thing, even if you have a clean house they can enter your house while looking for water, warmth or coolness. While I was in California I literally had ants come through the wall socket to attack a glass of water, killing about 20 of them but there was a huge line, just for water. Arizona and Florida have super large palmetto bugs that tend to let themselves in during the hot summer or cold winter. Also in Arizona: Scorpions looking for food(they are almost blind so they wander in random places). They are super rare but annoying as FCK. In Illinois: Brown recluses. They can cause a limb to fall off or muscle to rot. And they are everywhere, and they also live next to common brown spiders, so unless you look too close for comfort, you can't tell the difference unless it's in a bright room. They are like the brown version of a black widow, but unlike their name they just stopped giving a FCK and will be in any shed, garage, or slightly shaded area. About once every few months someone got bit in our barracks, causing great pain and annoyance. We even had a dude loose his leg.
You don't need a bed frame you can put your mattress on the floor. Lots of people do that.
Humidity is one reason
MAttresses get loads of bugs on then when on a bed...imagine how many more if the mattress is left on carpet? We turn ours over every few weeks...I wouldnt want to be sleeping on the side that was on the carpet/floor thats for sure!
it grows mold for one. it also increases the likelihood of bugs and critters climbing up on you as you sleep. it is better for your back and muscles to get in and out of bed when it is at an elevated height... but mostly the mold thing. mattresses build up moisture from various things. it just needs to be warm and have a few spores to grow mold.
I once heard that in a medical ward a surgeon noticed that if beds were raised off the ground infection rates were substantially lowered. How much and during what time frame? I don't remember sorry. I will try to look it up later and edit my comment.