In NZ, living in Christchurch after Feb 22, an arsehole called Ken Ring took it upon himself to become the Chicken Licken of 'forecasting' 'the big one'. People lost their jobs because they decided that they weren't hanging around for a literally earthshattering earthquake, bigger than the shit we'd gone through, and still were going through. On the date declared, we had a 4.9. Hardly fucking earth shattering.
I guess, for me, the question is, so what if it is? What can I do about it, what would I change about how I'm living my life if that is the case? Generally the answer for me is - absolutely nothing. I ain't no Sarah O' Connor. All I can do is continue to live my life the best I can both for the now, and for the future.
I genuinely can't see humanity being wiped out, per se. The only thing as tenacious and prolific as us seemed to be cockroaches. Okay, I might be wiped out, but I'm not humanity.