I think there's already a thread like this in the General Animation board, but okay.
I would NEVER want to live in the world of Ed Edd n Eddy. Then I would have no friends at all.
And I would never want to be a Pokémon. Then my trainer would just command me to keep fighting and fighting and fighting, and it would be horrible.
No, I'd go for one of these:
1.
The Secret Saturdays
This would be the best thing EVER. Everything about this world is amazing

I would love to be part of the Saturdays family and hanging around with my Cryptid pets, and going on adventures.
2.
Buzz Lightyear of Star Command
Hanging around in space with my friends, defeating Emperor Zurg, being partially friends with Warp Darkmatter. That would be great, wouldn't it?
3.
Young Justice
I would have loved to be a double spy like Artemis and Aqualad. Or just have such cool friends looks pretty fun.
My superpowers would definitely be
freezing stuff ''cryokinesis''.
4.
Chip ’n Dale Rescue Rangers
I'd love to be a frog and live together with Chip and Dale. This seems like a very safe world; I mean, those villains are just pathetic : P
5.
Scooby-Doo
Just solving mysteries with the gang is the only thing you have to worry about. I would definitely follow Fred, Velma and Daphne. I like the mystery more than food. But I do like dogs, so I'd definitely sit at the back in the Mystery Machine

And when they unmask the criminals, they immediately know why he did it, even though they are OBVIOUSLY just guessing, and for some reason they are always guessing it right

That would be fun.