@PlayTheGame I don't feel like girls are necessarily attracted to big egos. It is more that people with big egos will be more confortable in their own "skin", or at least what they feel like is their own skin; and that alone, the fact that you can be honest and confident about your intentions, is attractive by coming across as more genuine.
Having said that, by having a big ego you will limit your connections with women in a big way. You won't attract girls from a higher caliber, who can see through the ego, and ultimately it won't be satisfying because the ego is never satisfied; you will chase happiness by trying to sleep with more and more girls, without finding what you are looking for.
You will be infinitely more attractive, I mean sure maybe you will repel some girls who are looking for massive egos, but those are not really the types of girls you wanna be with anyway.