It's gonna take a hell of a lot to wipe out humanity. We're just like a plague - you can kill a couple billion bacteria but theres always a handful that survives. I can't forsee any catastrophe, regardless of how major, that will kill every single human (or leave so few that we never 'bounce back'). To me, humankind is probably going to be the 'dominant' species on this planet (and soon probably many other planets) for millions of years to come. Ofcourse, shit does happen, and I could be eating my words sooner than later, but I think when that day comes it won't be grounded in any predictions regardless of which culture made them.
As for those who make such predictions, I think predictions made by white europeans are just as likely as any other to eventuate - after all, they pretty much have all the power in the world so if it's a man-made catastrophe which is gonna wipe us out, they're gonna be the fuckers responsible!