This is the comment I've been looking for. Even aside from evolution - we are reliant on our gut microbe to survive. Unfortunately, in some cases, what makes

This is the comment I've been looking for. Even aside from evolution - we are reliant on our gut microbe to survive. Unfortunately, in some cases, what makes us sick is stuff from our gut microbe! We're literally a biome unto ourselves - and who knows what would happen if we removed all X. Our immune systems are pretty damn good at killing stuff off, and we've also seen that the elimination of worms (ew) from our biome may have cause or contributed to a number of autoimmune conditions. This sounds very much like an unintended side effects scenario. I definitely agree that we need to eliminate lethal and incapacitating conditions. However getting rid of "all disease"... it may cause more problems than it solves. And then there's the sociological angle too