I general, I think I take the best pictures when I'm shooting things I know and I'm interested in. Also, for me, cosplay photography has gone from taking pictures of cool outfits I saw to being a form of fanart. I can shoot more than I can cosplay.
As a side note, for where I shoot - I live in California, near Santa Monica. I also visit the bay area (San Jose / SF) and east coast (NJ/NY/PA) regularly. I hope to visit HK+SG+maybe MY sometime in the next two years. I will probably visit Seattle sometime in 2014. I will be visiting a bit of Germany, Hungary, and other destinations along the Rhine river June 2014.