It's very unlikely to happen, gays are stoned in Saudi Arabia for example.
Have to take it slowly.
Right now there are still countless gay people (and a great many other people as well) who are still being oppressed, lets go shoot the people oppressing them.
It's impossible because there's no world government. But I support it.
Yes, its unfair that people are hated because of who they love. Being gay isn't a choice people. Respect everybody and we all can be peaceful :)
Whether gay marriage should be legalised depends very much on the state of society. It is not needed in a lot of states.
Absolutely not, and while we're at it let's ban illegal immigration worldwide too.
No, there are alot of normal untainted places out there. They should remain that way.