Okay, I GOTTA step in here. It seems to me that you are lumping all girls into one category here when really it may be just the girl you seem to be enamoured with at any given time isn't interested in you, so you just chalk it up to her not wanting the nice guy. I'm sure there are many girls out there that would LOVE to give you 'nice guys' the time of day, but for one reason or another you aren't interested in her. Girls have the same problem guys. Cut them some slack. It's like saying all guys go for skinng, big breasted blondes! It's insulting and is not a fair assessment of men in general. Just like girls are only attracted to guys that treat them like assholes isn't fair. It's the same as anything else in life; love is an enigma. It creates frustration and anguish. BUT it can also create euphoric feelings that delight both body and mind. Finding the right one is trial and error, but when you DO find that one, you'll wonder why you were ever thinking such nonsense before.