Cowboys and Indians

I was thinking about the different types of games and what the rules of the games are and what they represent in an abstract way. Then I thought what type of game is a FPS? My conclusion was that it is a modern version of the old children's game 'Cowboys and Indians'. The game rules are similar; shoot the Indians in as 'cool' a way as possible. Make sure you have the biggest, best gun available and if possible dress up in a 'cool' costume while doing it. Make up a simple scenario that involves lots of Indians to shoot, but that is incidental to the main plot which is shoot Indians.

Hence, Game Theory 1: First Person Shooter = (virtual) Cowboys and Indians

Are FPS games targeted at young males by any chance?