In my opinion, if you don't have any real life friends who play this game and you don't have the money to waste on it, you shouldn't buy it.
At least once a week me and my friends meet @ someone and we do Rated BGs or Raids. Afterwards we go at the nearest pub or hang out somewhere in the woods or near the river..
six times a week we actually hang out all the time and one day (or actually half of it) we're playing wow together.
Most of the time we're drinking beer and don't care for anything anyways.