Oh wow. My answer is always going to be the same for this one:
THE POKEMON WORLD.
Seriously man. Ever since I was little, I have wanted to become a Pokemon Trainer. Trufax. I think it would be so awesome to have Pokemon as companions and just raise them and all that jazz. Going on adventures, battling Trainers, getting Gym Badges, participating in contests... I wanna do it all.
Sadly Pokemon are fictional, but I can always dream!