I also don't understand why parents do that. It is as if they have some little demon hanging on their backs with its claws wrapped around their spine, and whenever you leave the house it leaps out of its crevice between their shoulderblades and perches on their skull and reaches in their ear and starts stroking their temporal lobes and whispering "The child's room is disordered, how can you stand it, you have to change the room. It doesn't matter that you won't be using it for anything, the less you use it the more you abuse it, how can you tolerate the bed angled like that, the shelves, the stuff on the floor is giving off smell rays from a black hole and shooting across the universe into your smell sockets and you have to shove it into a drawer." and so on. And they think it is all their idea and are totally clueless as to why they need to do it, but they will maintain forever that it was the right thing to do and anyone would have done it and only a completely unreasonable person would complain about it. And then one day you take a toothpick and say "hey did you see that Hollywood Squares celebrity outside", and they look out the window and you quick sneak up and stab the demon in the head and it squeals and runs away and your parent turns around with teary eyes and sniffles and says "omg you hurt demo-neko-katsuragi-chan how could you be so cruel" and runs away to comfort the little beastie and you are like wtf m8?
It is a little like that.