The whole concept of predestination leads directly to that kind of nihilism. Belief in the Rapture is incompatible with human life - it would fit better as part of certain fashionable creed that leads young men to fly jets into skyscrapers. I'm amazed at these gigantic posts on FR of articles by pseudo-philosophers whose arguments boil down to: "Lay down and die - it doesn't make any difference, anyway."
That said, the Left is blowing this issue way out of proportion yet again. They were making the exact same charges against James Watt and the Reagan Administration, twenty years ago.
The doctrine of election does not negate the duty/privilege/mandate to serve God and others in this life.