I guess destroying this planet is more important than exploring new ones

If there was an alien ship that was prepared to attack earth, I imagine, that would make those numbers shift.

There IS NO SUCH A THING as HUMAN colony. Or human space stations, or human astronaut. There's American, Russian, British. So will the colonies be. And I don't wanna imagine if USA colonizes Europa (satellite) and Russians take Eo. They don't deploy nukes now, cause they'll harm themselves too, when they're on separate planets, there's no such a worry. And if we share one, well, you know what happened. We'll need nukes even when we find "other earth". That's why Arms first NASA second.

The budget isn't to destroy the planet it's to stop other people from destroying it before we get the chance to explore

Why do people always hate on the military budget?? If we did not have a strong military to prevent others from attacking us, we would not have any money to spend on NASA

There's no habitable planets that we have even close to enough technogy to get to

Umm, the other stuff is pretty far away?