In 1700 years from here, we'd have already colonized a massive amount of galaxies.
And in millions and millions of years from here, we'd probably leave before the sun explodes as an evacuation protocol.
And as things seems now, I doubt we'll die before that happens. Humans are far more reasonable than that. Jesus the stupidity of these doom theories...
Give me a break, humans killing everything including themselves?
FOR WHAT?! You don't go out and kill all ants out there for example. Although you have the possibility to do so because you happen to have some walking boots and cans of spray, doesn't necessarily mean that you'll go out and do it.
Same thing with nukes, there's nothing in it for you.