If it dies here, does it die? I'm not saying we ought to throw our lives away willy-nilly like a bunch of fools, but if in fact our time here is erased whenever we supposedly return, who's to say that death in this world doesn't simply mean returning home in the same way? We don't know. We can't know.
It's all rather philosophical, and so far we've no real answers, but it's something to ponder.