what is going on?

I actually noticed that I meet crazy or psycho guys. And usually they are not romantic at all. I like my male friends but they are always taken and cannot think of them more than friends. But sometimes I think if they were not taken. Never done anything to take anybody's boyfriend ever. But my friends are really nice guys, thoughtful, funny and have comfort.
The guys that I meet, usually crazy and make me less interested in them. This guy I met last Saturday,(gaging), he is crazy. Therefore before he go out on date, I am not interested in him any more.But the thing is he is crazy and I told him "it has been too much", he still calls me? I thought Not-picking -up-the-phone was world standard gesture. he doesn't get it.......

Am I becoming bitter? or just learning things about men? Well I am not pretty kind or skinny kind, I am kind of chubby and o-kay face. Am I expecting too much?