Have you ever replayed any game? I've replayed some games many, many times. I can't even begin to tell you how many times I've played I've played through Super Mario 1, 2, 3, World, and 64, or the classic Mega Man games. Maybe it's because I had more time and fewer games when I was kid and games were shorter back then, but even many games released in my adulthood I've played a lot. I play through at least one mission in Halo CE every week, and I've played all the other Halo games quite a few times. I've beaten BioShock probably half a dozen times. I've played Gears of War 1 & 2 several times. It all just depends on how much I like a game and how much of a time investment the game is. Shorter games or mid-length to long games that are divided up into easily digestible chunks usually get played more often. To me, nothing I buy I ever consider "disposable" (unless it's by it's nature limited- or single-use, like most grocery items and other consumables). If I buy something, it's with the intent that I'll be using it multiple times and will be keeping it forever.