This might piss some folks off, but whats new...
Quite a bit of this has to do with the geographic location of females in question. I'm going to guess that 9 out of every 10 women in the NYC metropolitan area, are complete and utter f'ing train wrecks. They've got this idea that their lives have to mirror "sex in the city" and that unless you're some successful urbanite, you've got no shot no matter how politely you introduce yourself. Either that or they've been headfucked by some guido douchebag, that has turned them into a megabitch.
About 15 years ago, stumbled across a displaced Husker fan in NYC. He broke it down like this, unless you're making 6 figures, dressed to the nines, drive a BMC, Merc or better, or are a fireman or a cop, you've got no shot. Where in the midwest, you can use deoderant as cologne and you've got a shot at getting a number.
That's why, if you manage to run into a young lady that doesn't have her head all gassed up on some bullsh#t, be nice, treat her right, and hopefully things will work out...