I was taken in by the Y2K thing in a most embarassing manner. These days, I don’t worry about the end of the world as we know it; I keep my eyes open, yes, but experience tells me that (for folks in America, at least) things always work out okay in the end. As always, we’ll muddle through no matter what happens.
Worrying, about all the things that could kill us off, will cause us to die much sooner.