You just gave me nightmares, OP, thanks.
Anyway, the world... Well, if it was all me, we would know our duty, and we would do it.
There would be no killing... and Nanodesu would be one of the few songs ever played on the radio.
And we'd all have cute little pet cats/kittens...
And XBL would be a lot quieter. And nicer. Much politer.
A world free from racism or sexism, the strong helping the weak, a unified world looking outwards, towards the stars...
Maybe not so nightmarish, apart from the fact that everyone would be me.
Also, there may be some spelling mistakes and insanity in that world, but not as many spelling mistakes as in this world.