Where do you keep your bike?

No doubt a stupid question, but what's the advantage of hanging up your bike?

(not directed at Sparky, more to do with those hangers you can buy)

The back of the garage has a lawnmower and other stuff like that. I can hang the bike, usually just my light fixed gear, above all that and save floor space. My tourer and my hybrid are too heavy, really.

Another plus is that the saddle doesn't get scuffed on the wall - although it's scuffed to buggery from before I started doing this, but when i change it...