One thing that distresses me about many Christians in the United States is their obsession with End Times theology and interpreting the signs. One of the reasons it distresses me is because people who claim to know what is going on are so often proven wrong. You can't give away the books written in the 80s and 90s the pointed to the “signs of the time” and the impending end of the world. Most of this stuff is not good theological study, but sensationalism meant to sell books.
A second reason that it distresses me is because it distracts people from the true mission of the Church: to make disciples. People are too consumed with trying to figure out what is going to happen and naming the anti-Christ that they neglect the world around them.
I think Greg Boyd does a good job of hitting on both these points as he talks about the latest sign craze: the four blood moons.