We should also ask the question: why do people need penicillin, anesthetics, and disinfectant so much today, when past generations did fine without them?
Individual people who need penicillin are doing better today, but as a whole past generations did as well as today, at least in the fact that they survived and produced us. In other words, we are doing BETTER when it comes to average individual comfort but the same in terms of surviving.
As a “whole”, how did past generations do with maternal/infant/toddler/child mortality and morbidity? Was that “as well” as today?
but sure, lets ignore over a century of research and progress because someone wants to ask "what if" and treat all that as an emotional response.