Haven't you heard? Nobody who's not a male aged from 14 to 40 is allowed to enjoy video games.
Be more specific - Straight, single, male, 14-40, works in remedial job or is mediocre academic performer, bad at sports, bad with women.
The massive irony is, that the rest of us gamers, want to abandon this stereotype. Yet the stereotypical gamer seems to want to hang on to it, by not wanting anyone outside of their haplogroup to enjoy their favorite past time.