Even if you only play games and they can only be played in 720p?
The current consoles may not properly support true 1080p in games, but they will in the next gen systems. And while you're waiting enjoy movies in 1080p they're amazing...imo.
Edit: I'm telling ya, if you buy a 720p you'll wish you would have gotten a 1080p later down the road.....just sayin.