I'm seeing quite a few misinformed comments in the thread, and I'd like to provide a short list of facts in relation to PC Gaming...
1. You can plug a PC into your big screen television if your video card and TV have HDMI [or component, VGA, etc if don't mind the lower quality video signal]
2. You can build a Gaming PC with a comparable or smaller form factor than most consoles.
3. You can plug wireless controllers like the XBox360 controller into your PC an use with most games. You can use utilities such as JoyToKey to map keyboard / mouse commands to the controller for others if you want [I don't recommend].
4. You can use a wireless keyboard and mouse on your PC. These plus a nice tray or mini desk surface allow you to kick back in your recliner and play FPSs to your heart's content.
5. You can replace parts in your PC for relatively low cost upon system failure.
6. You can play most older generation console / arcade / computer games on your PC with high compatibility with use of an emulator. You can find most games online, and you can download them for free [if you own the original game of course

].
7. Mutiplayer PC games on average have a more mature online community when compared to consoles. PC gamers are generally a older demographic.
Hope this helps clear some things up.