If you feel offended by people touching your stuff then you’ll just have to keep your stuff IN your room. The common area is a common area for a reason. Your roomates are not responsible for the fact that you have separate shoes for the bedroom and the common area. They find it annoying to see and to step over your shoes. I’m not a big neatnick but I do think a bunch of people’s shoes (and cups) littering a common living area or hallway is unpleasant. You can keep your bedroom shoes and other shoes just inside the doorway of your room instead of just outside the doorway.