I didn't bother buying a 360 until about October though, there just weren't enough games on it that I wanted like in your case. Same reason I haven't bought a PS3, and probably won't as none of the upcoming titles are really "my thing." That goes for the Wii too actually, it's just not generally my thing and I'm not into the games.
Now the 360 has a lot of titles I like (and more incoming like GTA4 and Fable 2) I just had to buy one. That said though the PC is technically far superior and as I keep saying you can buy a 360-equivalent PC for only £300 notes or so. Just depends on the games when it comes down to it.
I edited my previous post as you were quoting it, and just to be controversial GOW is much better on PC!