I was similar, not that I wasn't invited, but I couldn't handle something where the point was entirely social. I wanted a game where I could know if I was good or not (and preferably be better than other people.) It also drove me crazy that we were playing a high fantasy game where we were fantasizing about having all kinds of great powers and doing amazing things but nobody was doing anything cool outside the game. Not that I was doing any better; I just liked to hate myself for it. I probably could have made some friends if I had gone back.