Not to be too harsh but the whole 'nice guys finish last' thing which is implied in your answer is a myth.
Girls say 'you're just too nice' as sort of a kind, gentle rejection.

It may not be that other men are more aggressive, disrespectful and skilled in the ways of stalking... it just may be something about you. Do you smell? Are you a chubbster? Do you make girls feel awkward in your presence with your lack of confidence and your sweaty hands? Do you spend your evenings playing WOW and crying into the semen encrusted tissues that litter your desk?

If the answer to any of the above questions is yes, then please, don't chauvinistically blame women for your misfortune. It may not be their bad judgement, but yours.
( TFD is sporting this season's finest necropants, Wed 10 Mar 2010, 1:34, Reply)