Why are you so close to me?

Ok so I am a hugger by nature and generally ok with folks touching me for the most part but why do people have to be so close to me when I do not want them to? I am also a morning person so the fact that this pisses me off should tell you just how much it does. When I am on the bus at the ungodly hour of 6am and there are only a few other poor souls begrudginly venturing in to work there are lots of choices about where folks should sit on the bus. One of them should not be anywhere near me. Take a pick - Choice 1 - over there! Choice 2 way over there! and Choice 3 - not over here. So why do you (Dummy) have to be so close to me? Crazy!!!