"Well of course you would say its no more dorky, you're one of them!"
At least the games "they" play are profitable enough to not be a disappearing breed. How many new MMO flightsims are on the horizon again? That may be the basis for your contempt, the knowledge that something you dislike is far more popular and successful than an activity you enjoy.
I'll happily choose a form of entertainment my wife also enjoys over one she wants nothing to do with. As it is, currently I subscribe to *no* online game of any kind.
ChickenHawk's example is unfortunate, but no more unfortunate than a man who leaves his family for a woman he met anywhere else. I know a man who left his wife for a woman he met on an airplane--is that any better?
J_A_B