Girls in their 20s are part of the 'me me me' generation, sometimes called millennials. They all think they're a Disney princess and special so they're often picky bitches. Older women already know what they want and go after it.
I blame cell phones and the internet. Oh yeah and Disney.
The wider your spread, the more ducks you'll shoot, you dig?
I had an older woman (who had been around the block, mind you, AND wanted to fuck me) tell me that young girls are often very insecure and shallow, and also "pillow princesses", less likely to give a slightly below average guy a chance unless he somehow flatters her or whatever.
I guess the problem with me is that I simply don't give a fuck about that. I've had to get over my ego growing up and being independent, I don't have time for someone else who can't do that. I guess it may limit my chances a bit, but hopefully once they reach like 25 or whatever and start to lose their pretty girl phase they realize that they were fucking themselves by dissing the guys who were actually good boyfriend material and wasting their time with douchey assholes