...but I still buy games. It's my hobby and my obsession. No way I'm quitting game-buying, with Dragon Age III and Persona 5 on the horizon.
It's the same for me. I know I have many good games in my backlog (which was 46 titles long last time I checked) that deserve to be played, but there are also plenty games I look forward to or want to play but haven't bought yet. My solution is balance.
-I play most new game very soon after they come out. Having to review many of them helps a lot.
-When new releases are slow, I buy games I've wanted to play for some time now on Steam. My rule here is that the games need to be on sale and that they must have been on my wishlist for atleast some time. Impulse buys are strictly forbidden. In the past three months I bought 20 games on Steam, I've played through 18 of them thus far.
-Nothing new on the horizon and no Steam sales to take advantage off? Then it's time to play something I've had for years. I try to go through 2-3 games from the deep end of my backlog every year. Slow and steady.
Over at another forum we have a list similar to the completion list here but with one important difference: you list the games you bought as well. Finish a game and you get a point, buy one and you lose one. The goal is to end the year with a positive score. I'm -3 right now, because of several new releases (Xillia 2, Danganronpa 2) and those two Steam games. My best score was +4, somewhere in April.