WoW will save you money. I played for about 2 1/2 years, through the end of Vanilla, TBC, and a couple months of Lich King and during that time, a vast majority of my gaming time was spent running around as a Troll, killing shit. I played console stuff here and there but for $15 a month, I was given more content than I could ever deal with.
I was tempted to come back again for Cataclysm just to see how the original world changed and to try a Goblin but I've avoided it because I don't have the time.
It becomes a job eventually, but the initial climb to 60/70/whatever the level cap is now is very enjoyable.