A note. There is a sensible reason why, likely evolutionary derived, that we ignore "in the future" things so handily. Social reasons.
Let's presume I dislike my neighbour. He's not loud, just an asshat or some such, to the point that I'd love to punch him in the head. I don't, of course. We live in a modern society. Nor does he, either! The dislike flows mutual, deep and dark, yet we essentially ignore each other.
And even more astonishing? We go to sleep each night with a rival next door, sleep peacefully and in comfort, yet each of us with baser, animialistic instincts to beat on each other, perhaps to death, and yet? Even more astonishing, if the city walls were attacked? Hatred or not, we'd stand back to back and defend each other. Our families. Our friends, our city.
We are genetically predispositioned to live beside danger, and even completely ignore it, put it out of the way. The danger with the neighbour, a rival!! right next door, is ignored. And more so, the danger with those invaders one city over, with the wolf outside our cabin door, all of these things are put out of mind.
We'd go bananas if we had to focus on "the threat" constantly.
So we are designed to ignore even impending threats, let alone threads "decades or more in the future". If fact, I've often wondered if the more dire and dangerous the threat, yet with it not immediately on our doorstep, the more people might simply block it out!
That only mild threats are something that average human can deal with, for there is no need to push it from mind to sleep, to relax, to live without becoming a bundle of nerves. I wonder if there's some metric here, some "perfect level of threat", which ensures it is constantly in mind, yet sleep is possible, this returning the maximum human action on a distant (time or distance) threat.