I once saw someone with a great sarcastic t-shirt.
On the front it said "What Would The Dinosaurs Have Done?".
On the back was a meteor hitting Earth.
Nice
I haven't said any of this to say that I think the sky is falling. More, that we don't know. We can't predict what will happen. It's vastly more likely that tomorrow, people will get up, have breakfast, go to work, go home, have dinner, and go to sleep.
But when we're talking about planet wide changes, major environmental modifications, meteor strikes etc. we *think* we have better than normal chances of surviving, but it's kind of like the guy smoking his cigarette saying that "I won't get sick from this, that'll just happen to someone else". You really can't predict what nature has in mind, and we're very tiny, when it comes down to it.
People get weird diseases, they slip and fall, have strokes, heart attacks, get run over by drunk drivers, hit by stray bullets in gangland shootings. A baby only a few weeks old was left parentless a few days ago, when her parents were with her in the family car, coming home from a wedding, and got hit by another vehicle. Both parents dead. No chance. Baby survives. Another family in my area years ago......were driving on a local two lane highway, and a tree falls on their car. Husband and child killed, wife survives. Again, no warning, no chance, no choice. Nothing to do with survival of the fittest....just pure, dumb, bad luck.
IMO, when your time is up, your time is up, and there's nothing you can do about it.....and that goes on an individual level, as well as a global or racial level.
That doesn't mean to just sit there like a bump, and not strive for anything....but it does mean to appreciate every day, because you're never sure if you'll have another.
Banshee