The only people who ever come in my room are my friends, my brother and my parents. All of them know I am a slob, so there's no point in trying to hide it. Finally, though, something has possessed me to clean my room, rearrange furniture, change the decorations on the walls, get new curtains and find some posters. I don't know if I'll ever actually get around to all of that, but I have a feeling I might. There comes a point when your style completely changes, and your room has to change along with it.
New friends mean new pictures to hang up.
Getting older means changing color schemes and heartthrobs. Parents, I know it can be painful to see your kids' rooms a few days after they clean it, but just wait. They'll get around to cleaning it when the mood hits them. Just like everything else we do, cleaning takes time, and we have to be in the right state of mind. Teen-agers are just like that.