I'm not doubting your story but maybe it's to do with intentions? A slimy salesperson who fakes warmth and friendliness in an attempt to ingratiate himself would rub me up the wrong way as well, but when done sincerely I really appreciate it and make an effort to do it for others too.

I suppose it is possible that everyone i know secretly resents it and gossips behind my back about my creepy touchy feeliness but I don't think so. Indeed, they reciprocate, which would be pretty counterproductive if they actually wanted me to stop.