The most pleasurable thing to do after a long and tiring day is to sleep. And the best place to lie down your exhausted body and mind is still and will always be your own bed. Be it king-sized or one of those cute little bunk beds for children, it does not matter much.
When I was younger, I used to stay up all night doing something and then something else. When I got a little older and had to focus on how to support my family, I realized how much I wanted to sleep and that I needed sleep more than others.