I rarely pay attention to people on the street. Do I look like someone who had a hard time before?
I do get the ocassional random stranger approach me and say positive things like "where did you get your so-and-so" or "I like your x, y, z" etc. NOTHING negative really.
One time when I was like 17 or 18 in London, three guys whistled at me at like 3AM. I went out for a walk to the 24hour Tesco in Oxford street - I was starving and it was near my hotel. Anyway, they were whistling and one of them went like "hey sexy poof" or something. I approached them and asked what do they want, yaddi yaddi yadda. 10 minutes later I found myself in a quick foursome and had I been a girl, a child would've been conceived that night and I probably won't find out who the father was.
Anyway, in all seriousness though, I've been to quite a few places, from Beijing to Moscow, Manchester to Stockholm, Bali to Copenhagen, Bangkok to Edinburgh and I've never had any issues with other people whatsoever.