And please don't give me that "You don't *have* to upgrade, you can just ramp down the settings on the latest games" argument. Yes that's true. But we all know that most self-respecting gamers *hate* to do that.
After admiring the new purdy graphics on most games for about 10 minutes, I usually go back and turn the graphics way down to make sure I have a steady FPS; I get so immersed in games after about 20 minutes of gameplay I don't notice whether or not my shadows are perfectly smooth around the edges.
As long as the graphics aren't absolutely terrible to the point where it's distracting, I'll be happy playing on the lower settings.