Well it started out with the anticipation of my two older boys coming out for a visit. I had to make half the basement into a bedroom  for one of my sons (it was a computer area and tv/gaming area) with some shelves and I left the gaming/tv area as is. My SO son, E, completely lost it. It's "his space" and "NO, no one is sleeping down here" and "why can't they share the spare bedroom", "this is so dumb" etc....I calmly explained that since they are teens they all deserve there own bedroom area and if the tables were turned, we would absolutely do that for him.