While I'm not as much of a gamer as I used to be, I'm still a gamer. I can wish all I want that certain people in the last 20+ years made different decisions so that the Mac platform would be more dominant so more games would be made for the Mac OS. But the reality is that Windows became the dominant OS and the game development went "in favor" of it. So I must dual boot.
I can't say for sure how it ended up this way, but I can say that I prefer my digital TV experience on the Mac OS. Although I'm using a tuner that works fine both in Lion and Windows 7, the software interface, EyeTV, is what makes it so much better on the Mac OS (and it only exists on the Mac OS). For Windows 7, I have to go through the Windows Media Center, which isn't entirely bad, but just not as good as EyeTV.