First, feeling hopeless about life is weak. Knock it off. Fear is for cowards. Seems you care a little too much to be a coward.
That said, two ways I see it playing out. We will either be forced to make massive changes due to our environmental conditions, which will come to pass over hundreds of years, or we'll be driven by money. No doubt in my mind that financial opportunity will be what drives us forward. It's a given. And the population of the WORLD will benefit because of it.
My problem is that we KNOW how this will play out yet we waste time and opportunity getting there.
But dude? Don't live for shit that might happen. That's a waste of time.
Go take a walk in nature instead. That's not a waste of time.