Doomsayers

Those who foretell the end of the world (plague, war, famine, global warming etc) may, in the long run be proven to be correct. However, as John Maynard Keynes once said:

"In the long run we are all dead."

Mankind is best served by working on the assumption that we will still be here tomorrow. Those who plan for Armageddon are merely encouraging it, and wishing their lives away.