Everyone Dies of Something

I know this is a morbid topic to start out on. The reason I bring it up is that last night I was watching the movie Grand Illusion. It's a French film, one of the first prisoner of war escape films, and in it they discuss the diseases that different classes die from. Gout and cancer are the deaths of the upper class. That was the early 20th century. Now I would bet that it would be diabetes and cancer. One should note though, as medicine has improved and progressed so has the increase in cases of cancer.
Some people argue it is because there is an increase in the types and amounts of carcinogens that people come into contact with. And that probably has some impact on the numbers, but I think what most people forget is that you have to die from something. If it isn't smallpox, the plague, tb or one of many other diseases it will eventually come from somewhere else. And that is where cancer comes in. I'm not saying that people struck down in mid-life from cancer isn't unfortunate and that children having cancer isn't tragic, but life is by its definition is a terminal condition (sci-fi aside).
Eventually given the billions upon trillions of DNA replications that occur in ones lifetime (and I'm not quoting any particular number so I'm still probablyunderestimating) something will go awry. And even given all that the probability that something goes wrong and results in a malignant result is relatively low. However, it only has to happen once in a way that your body (or modern medicine) can't repair for it to be fatal.
There isn't a lesson to be learned from this thought process or any summary statement to put it all into a nice, neat, coherent thought. That's Life.