risking their own health so that the human genome can keep battling with and evolving natural defenses against disease? Diseases evolve orders of magnitude f

risking their own health so that the human genome can keep battling with and evolving natural defenses against disease? Diseases evolve orders of magnitude faster than humans. Giving ourselves a chance to evolve also gives the disease a chance to respond and they will always find ways around our defenses faster than we find defenses. Remember, the usual result of failing to complete a course of antibiotics is a new strain of antibiotic-resistant bacteria. Leaving a reservoir of a disease that we have a vaccine for is far, far more likely to result in a new strain of that disease that can bypass the vaccine. Additionally... what's the point? Any disease that has a voluntarily unvaccinated population also necessarily has an effective vaccine. The development of a effective vaccine equally necessarily indicates that developing vaccines is easier, faster, and better than attempting to evolve defenses. Why try to go back to evolution at all? The existing vaccine works. If it stops working, make a new one. No need for these ad-hoc primitivist schemes.