It would be interesting to see if, in a few thousands years, these traits do somehow manage to get passed down. There is a good chance that traits that help wit

It would be interesting to see if, in a few thousands years, these traits do somehow manage to get passed down. There is a good chance that traits that help with things like Alzheimer's wouldn't be as likely to get passed down because of reasons you've mentioned. Or we might be able to treat it with other therapies as science outpaces evolution as far as longevity goes. Humans are in a very unique place with our sentient minds and understanding of the world. It'd be nice if we could compare ourselves to other species, but we haven't found any yet, and they're likely to be billions of light years away, or extinct, or both.