The backside of being accepting of people is when they're not
   the same way, they'll close doors on you, push you away -
   because they don't know what to do with you. You'll get branded
   a weirdo, intrusive, "not knowing your place". But if you can
   handle the stigma and smile, carrying on, in the end, you'll be
   a MUCH happier person - because you make it a point to be
   friendly, and its okay if your friendliness is not reciprocated.
   Friendliness makes many people squirm but their squirminess is
   not your responsibility - that's their burden. it's quite
   freeing. "