[quote=spdrun]If breaking the rules harms nobody, why exactly “should” they be followed? We’re talking about people sharing a house, not a toxic waste dump.
Live. Let live.[/quote]
Yes, live, let live, and live up to the obligations that you have agreed to. If you want the opportunity to let multiple renters share your home, choose a home where that is permitted. I shared a home with 9 other students when I was in college; we were what I would consider well behaved but I wouldn’t want a similar house next door to me.