Actually one of the major problems with PC gaming is MMORPGs. Especially World of Warcraft. Due to the pay to play (& addictive) nature of most, many people have a tendency to dedicate so much time to an MMO that they remove all other gaming from their plate. Since they're not a one time fee, they want to get their money's worth each month.
I was also guilty of this in the early days of Guild Wars. I spent all my free time (which wasn't much to begin with) playing the game and nothing else got any attention.
To cash in my CC rewards points for $300 in Circuit City gift cards to purchase a 360 or not: That is the question.