I often wear mine at night, because of tinnitus and just feeling uneasy (the world seems "too quiet without them). But, I use EarGear corded, so if they happen to come out of my ears, they are not lost. Also, the cats have a much harder time trying to carry them off to play with!
It IS important to give your ears time to "breathe," though; because I got an ear infection (otitis externa) and had to put drops in my ear for it. I think a common name for it is "swimmer's ear." The doctor said it was from the moisture retained in my ear because of the earmold.