I would say it's aesthetic, though it's not like it's just about looks for me. Someone could be hot and have a crappy personality, and that doesn't mean imma be into them.
I'm not entirely writing them for me, i'm writing them to cope, and they are about someone else. It's like making food at a family dinner. The ingredients were bought by someone else, and your not going to be eating the meal, but your going to steal a whiff and maybe a bite while cooking it.