That's rude cause everyone has been a kid. Kids aren't monsters, they just go through their phases. It bothers me how people think kids are "annoying" in reality they are just little bundles of joy who need love. kids are just kids!
So much room for activities. but little, individual reading/working nooks (for a tea house or library.) -- or just a space to crash/decompress/work in a different position. And the scene from step brothers makes it even better!