Personally, I don't see any logic to the following bit of reasoning:
1. Cults and religious wack jobs preach that the end of the world as we know it is coming.
2. Therefore the world as we know it cannot end, since to believe so would be to think as cultists and religious wack jobs do.
I stash a portion of my income away in a 401k almost laughingly. as if.
Tell the tens of thousands soldiers and civilians that have died in the Iraq war, or the 250k that were wiped out by the tsunami a few years back, that the world can't end. It can and does every day for at least some people, and every now and then it happens for a whole bunch of people at the same time. And as the earth's population swells, the potential for the end of the world to come for a ever bigger bunch of people at the same time only increases, and with human society having become so global and interdependent, how much brainpower can be lost before the whole works ceases to function?
The only thing is, is there's no glorious pot of gold at the end of the rainbow - no rapture, no Second Coming. Those are fairy tales, and I can't help but believe that deep down, even the most diehard believer knows on some level that they're not going to all of the sudden find themselves floating up towards the sky to meet Jesus.