Something which bothers me way more than it should is the population decreasing. Ever since the 1960's, the birth rate in the United States has been going down. That means, inevitably, that there will be a time when deaths outnumber births, and the total population shrinks.
Actually, this has already happened for white people, in the United States. According to the 2012 Census, the overall number of white people is decreasing. Lots of whites are dying, and not so many whites are being born. This trend will probably continue for decades, since we've had decades of build-up for it.
Sometime in the future, this is going to happen to the entire United States population, and even the world population, not just the white population in America. People disagree as to when the population shrink will take place; I've heard estimates from six years to fifty years.
That's what worries me. I feel like something big and bad is going to happen, when there are suddenly a lot less people alive in the world. Isn't there a science fiction story about this or something? We have one where there are too many people alive; where's the one where there aren't enough people alive?