I've had a 360 since 2006 - This is my 2nd system (a Jasper unit) and frankly, I don't play it much anymore. The most recent game I've purchased is Skyrim, but haven't played it in 10 months.
I bought a PS3 about a year and a half back for the blu-ray usage. Since I don't really game too much anymore, I decided to pick up a few PS3 games for the hell of it so I wouldn't need XBL. Turns out I don't like the PS3 controller that much, but can't see myself doing anything with my 360. I'm thinking I could get around $220-250 for my 360 + controllers + games. I don't really need the $$, but at the same time, I don't seem to be using it at all.
I feel bad since I've had an Xbox since they were released in 2001.