Yea, it's not obvious whether we should be sacrificing people today to maybe save future people, especially if we can genetically engineer it all away. But our

Yea, it's not obvious whether we should be sacrificing people today to maybe save future people, especially if we can genetically engineer it all away. But our ancestors (or rather the humans that weren't our ancestors) were certainly sacrificed for our benefit. I don't think we'll evolve our way out of genetic diseases or we would have already. Rather, it seems like we'll degenerate into higher rates of them without ongoing selection pressure keeping the rate low.