Much like with programming languages, gaming systems are just tools. I care about the games themselves. If they were designed to be played on a console and have gamepad controls, I might play them there. Otherwise I play them on PC. I'm much better at FPS games with mouse/keyboard so I prefer them on PC, but I sometimes get them on consoles to play with my console-only friends. Social, casual games for parties (like Kinect games or Nintendo games like Mario Kart) are best on console. Sometimes I play a console game on PC anyway, just because I use it more often. Restricting yourself to one system and missing out on good games seems pretty silly to me.

As a developer, when I hear someone preaching about how great one programming language is, I think that person has little experience with other programming languages and is just trying to convince himself he doesn't need to learn any others. When I hear someone preaching about how great PC gaming is and how bad consoles are, I think that person has little experience with console games and is just trying to convince himself he doesn't need to try them out. He's also trying to convince others to join him so he doesn't feel like he's missing out. If you enjoy good games, focus on the games, not the tools used to play them.