Is it normal to often sleep on the floor?

No, it's not normal to sleep on the floor, because the floor is too hard which may cause back pain. I also slept on the floor without the mattress but my doctor told me to sleep on the soft mattress and it really helped me to get relief from back pain.

I have a very hard mattress, which I love! I know how you feel about sleeping on something too soft, even if it is a couch! And I do love sleeping on the floor, I once spent an entire summer on my living room floor, let's just say it was the best floor sleep ever. Sleeping on the floor is completely normal, I know a few people who prefer the floor to their bed.
Did you grow up camping? That's probably where my fondness for hard floors sprang up!

if ur bed is really that uncomfortable then u ought to get one of those bed topper things. like a goose feather one

Most people sleep on a bed regardless.

I make the maids sleep on the floor.

i do this from time to time, but as u did this for like a month after a girl broke my heart. It wasnt like for any reason, i just did and for like 4 minths straight too, idk.

for some strange reason i enjoy sleeping on the floor too. your right the mattress is too soft.

Depending on the level of inebriation, the floor can often be the best place. Although I remember one night where gravity appeared to be acting in many different and confusing directions all at the same time, I genuinely did fall off the floor. Or, rather, onto it. I'd merely thought I was on the floor before I fell. After I fell, then I was. I'm glad that kind of thing can only happen once at a time.

I love sleeping on the floor. Sometimes I find it more comfortable than a bed. It is normal.

I sleep on the floor everynight because I have no matress. So forgot what one feels like. I just put a blanket on the floor as cushion and I sleep like a baby. But it's not good for the back