I think people have always made predictions about the apololypse, and will continue to do so until the end of time (no pun intended). People are enthralled by end-of-days predictions; depending on what the predictions are and who is making them, people tend to get drawn in. What we fail to realize many times is that different individuals and groups have made so many predictions in the past and have been, obviously, wrong. It is easy to say that our world is headed for destruction because of war, famine, natural disasters, etc. However, if you look back in history, our world has been in turmoil for billions of years; it just seems worse when we are the ones living it.
So, while I do enjoy reading about theories, and especially reading fictional literature that depicts post-apololyptic worlds, I don't much buy into the hype. I think we should continue to be good people, not because we anticipate judgement day, but because that is the right thing to do.