Two main factors in my case are probably time and my own collecting habit. Say what you will, I love collecting games, even if I know I won't get to play them right away. That said, I by all my games with the intention to play them at some point, even if it won't be for awhile. For the time being, my backlog is about sixty-five games or so (that I haven't even started, I mean), which is actually an improved from the seventy-three that it was not so long ago. So, I am getting through it, albeit slowly.
Hmm