How come women never email guys first on dating sites?

Im wondering why a very attractive guy never gets a response from the 3 largest dating sites online? Are women so conceited on online dating sites that they cant email a guy first? Do they lack the confidence or skills needed to communicate in a adult sort of fashion?

life's a ***** ain't it.

Trust me, if men were even HALF as sexually repressed as women, the human population would drop in half.

Why do you think women, generally don't rape men ?