Maybe the fact that you dont want a relationship, shows in your actions and how you come across to guys. This could be without you even knowing it. Another factor is some girls just come across as up and hard/hard to deal with/picky/not easy going, I am not saying you are. even if you arent and things you say/do come across this way- you will get a response like not good enough to date. Does that help? Its a shitty thing that they said that though, there are more eloquent ways of going about that.
maybe, I mean I just got out of a two year relationship, I feel like it wouldn't be fair to date someone else because I'm really not entirely 100% over my ex.
I wouldn't be surprised if it was because I do come across as being hard to deal with my school life and my family -- I feel like that might be it.
My self esteem just dropped a gazillion points. awesome
Irrelevant side note: we have the same birthday.