Longer life expectancy is a statistical lie. My grandparents died around ~95 but life expectancy at that time was probably lower than ~40. My grandmother had 4 kids who died very young (around 1-2 years of age) and that skews the numbers significantly.

We are baby-sitting lots of adults that couldn't make it past 1-3 years old of age before the medical revolution. Some of them might never be able to be productive and only consume resources from their families or the public. So maybe evolution was not such a bad idea after all.