[MarcScott]

> We have a moral obligation to evolve to suit the environment

And we've done that by evolving our mental capacities and developing a wide range of tools that have enabled us to survive and prosper. We are apex predators of apex predators, to the point that we kill other predators for sport rather than food.

Stick me naked and toolless in the wilds of Siberia and I'd estimate my survival time in hours rather than days. Without our tools we're a pretty useless species that hasn't even evolved far enough to be able to walk on two legs without developing back pain, unlike penguins.

Vaccines taken once in a lifetime, or taken annually, or taken daily are just another tool. Why is this any worse than brushing your teeth, showering, taking medication or even getting dressed. If a doctor told you to take heart medication on a daily basis to stay alive, would you refuse on the grounds that it's better for humans to evolve hearts that are less prone to heart disease?