In choosing universes, I take into consideration the happiness of the average person in the setting.
-40k is good, but only if I'm Ork or Dark Eldar. Seriously. Orks thrive on krumpin'. Nothing like punching the boy next to you for his teef. Death is trivial and even funny. Meanwhile, everyday Dark Eldar life in Commoragh is dynamic, where everyone is high as a kite, toying with slaves all day, jerking off to gladiatorial matches, going out into the Materium once in a while to fetch playthings, all while competing with their neighbors for dominance. I'm willing to bet that even the pizza delivery boys are hardcore.
-Homeworld? What? Why did I even mention this? Civilians are almost a myth in here, much like 40k. Dunno. Maybe being Bentusi would be worthwhile.
-Starcraft. Huh. While being in the Space West can seem carefree, I don't like the thought of Zerg showing up at my doorstep, what with most Terran organizations being uncaring assholes. Might as well stay on Earth. At least everyone speaks English there.
-Fallout is pretty much a shithole. I'd be lucky if I became a Ghoul running a business in the NCR, and even that isn't easy. The only other good things to be are either prospectors or fucking raiders, which are actually better. Being part of the Enclave would qualify if they didn't work exactly like the government that was happy with screwing up the rest of the world in the first place.