Sorry to break it to you dudes, but size matters. Usually, a lady likes a guy with a large member, or sometimes slightly above average will do.
But sometimes a big d*ck will scare a lady off. And if you have a small dong, surely there is a person out there looking for just that.
Some guys find that having a large wiener really helps them out. The rumors spread and then they have the ladies lining up, practically begging for it. According to some women, once you go big, you just never go home.