I also don't quite get the whole make a replicate of yourself idea. The whole point of games is to get away from reality, so why would you want to make yourself and play yourself in a fantasy world?
I insert myself into the environment/situation/plot. I've never been in a post-nuclear wasteland, an ice covered nordic continent with fantastical creatures and giants, a massive space station, or any one of a million fantasy settings myself. I'd qualify that as getting away from reality, whether my character resembles me or not.