"We don't need to vaccinate against measles because hardly anyone gets measles."
Rinse repeat
> Chesterton’s Fence is a principle that says change should not be made until the reasoning behind the current state of affairs is understood. It says the rash move, upon coming across a fence, would be to tear it down without understanding why it was put up.
But in theory, people are smart, and shouldn't evolve their culture by blind trial and error.