Why I chose a PS3 (among other reasons).
If you still run XP (like myself) it will continue to work, even if they stop selling it. My bet is tons of people will still buy XP for their PCs on Ebay and the like, because it's a stable operating system.
They'll still release security updates, and even if all their games require it, they'll pry XP from my cold dead fingers!
The issues are known. The loss rate on the Xbox 360 is about 33%.
I didn't make it!
They have spent millions of dollars on repairing them. And its their own fault. Heh.