Story of my life man.
Although I'm in no position to be giving dating advice, you shouldn't be dwelling on it. I see where you're coming from, and believe you me, I know. After a while of constant rejection, it's hard not to develop a grudge. Truth be told, the majority of it is our own fault. If you approach women with that mindset of worthlessness, you've already set yourself up for failure.
I think it's always good to have something you're confident in :]