Evolutionary Obsolescence

We are not at the peak of the evolutionary tree, far from it, but the likely end is some form of free coherent energy form, passing through the electro-mechanical stage.

At the moment we are at the mercy of our biology, prone to disease and breakdown, and probably having a lifetime of a maximum of 200 years at best before some form of catastrophy stops us from functioning. As far as dementia goes, most of our mental functioning has something like an end date of 120 years, starting to go wrong after about 70 and the risks doubling each 5 years from that point. 75 being twice that of 70, 100 being 64 times the risk, 120 being 500 times the risk and almost a guarantee of it.