Ok, so now you're making an observation about medicine instead of hours of work. What exactly is your point here? Things are better now than they were in the past, so there's no reason why they should be better?

I mentioned harvests which have nothing to do with medicine. I know we don't suffer from famines nowadays but this was a real thing before.

most people didn't die in their 30s, if you could make it through childhood you'd usually live to your 60s/70s.

Care to provide a citation or clarify the period you're referring to?

Citation: common knowledge of much higher infant mortality rates throughout history + the intricacies of the mathematical mean