I think it helps them feel less fat. They'd be twice the size of any normal sized human, so by picking a tiny dude, they can tell themselves "its not me tha's too big, it's him that's too small." The dudes that go for this shit always having something wrong with them. This guy has a wonk eye, and looks like he should be on the short bus. Probably fucked up his self esteem, and he thinks this is the best he can do.