To provide furnishings for my rent-free residence in your mind. Since I'm going to be there anyway, I want to do a good job of being there.
Also you were screeching in this thread about 'guy' already, moronic samefag. People don't want to look at it. You're shitting with your keyboard, but there's a saying about an ocean of piss you might not be aware of. By furnishing my residence in your head you shut the fuck up partially, which is good.