Never had a PC gaming machine, never will but wondered for the fans of PC gaming dont you miss sitting on the couch and just relaxing while you game?
I prefer playing games in my computer chair sat back with a controller. It's how I play the bulk of my PC games and all console games. At this stage my iMac is just a console (5.1, 27" display with a HDMI link to my 55" TV should I want a bigger - but lower res - screen).