Let's just go through some options.
Legend of Zelda: Hyrule would be a nice place to live, when it's not being destroyed and taken over by Ganon. Too much risk involved if you ask me.
Metal Gear Solid: It's pretty much the same as the real world (not counting 4), except Solid Snake would be real, which would be reason enough on the off chance I'd meet him.
Dead or Alive (Xtreme Beach Volleyball optional): I'd cum, other than that not much to say about it.
Resident Evil: Much like MGS, it would pretty much be the real world, except you'd constantly have to worry about the T-Virus. No-go on that one...
Animal Crossing:There's apparently free electricity, you can move crap around really easily by turning it into leaves, and you can sell fruit for ridiculous amounts of money, plus you can shake trees for money and furniture. Of course almost everyone else would be anthropomorphic animals, which would make sex extremely awkward unless you're a furry, in which case it would be great. I am not, so this is also a no-go.
Metroid: The universe would be safe from tyranny due the even handed brutality and caring of Samus Aran, which would be great. I guess you'd have to worry about Space Pirates, but still. Also, I'd cum.
I'd go with Metroid.