In the future we will hopefully discover new and better non-pollutive ways to produce energy for the whole world, but right now we don't have that technology. So lets wait? Can't do that, we need energy right away or there will be no future for humans.
Burning fossile fuels causes problems that effect the whole world, not to mention local problems like smog.
Another options are these "green power sources" we have now, which aren't effective enough. So the only option we can rely on in the future is nuclear power.
Nowadays the risks we take by using nuclear energy are minimal. Japan is known to have very loose grip on when it comes to safety in nuclear plants and still it took a massive earthquake and freaking tsunami to cause problems on a very old plant that was supposed be shut down in the near future.
And also, before we mine and use that uranium it is radioactive, right? I'm no physicist you know.
So practically we dig up radioactive stuff from the ground, nuke it up a bit in our powerplant, then put it into a huge container and put it back to ground?
Also, someone just took out the maybe-they-make-nuclear-weapons-in-there? -card. That is very unlikely. IF someone would be stupid enough to actually launch a nuclear warhead, it wouldn't even hit it's target before russia/usa/france/uk/ect. would have made a couple of launches themselves. As a result..... Everyone loses!!! YAY!! We are now talking about amounts of energy that can easily compete with that meteor that caused the extinction of dinosaurs. But as a bonus, everything is nice an' green of radioactivity. Aka nuclear winter.
So, no more nuclear weapons, plz world, plz... I don't really see the point in "haha, we're so strong we can kill us all!!"
Recently North-Korea threatened South-Korea with nuclear weapons, but I haven't heard anything about it since then. So I've made my conclusion that even their leaders were responsible enough to avoid a conflict like that.