Why is it that heftier people sometimes tend to be less open/friendly towards skinnier people? I'm a tiny person, only 5' and 100 lbs.. I am friendly towards everyone of any age/gender/race/body type etc, but some people just don't make an effort to reciprocate that.. and if they do, it's usually forced just to be polite... anybody else notice this? Or does this all just sound retarded?