> If Nature wasn't kind, how did we make it for those hundreds of thousands of years? The majority of humans died. Sometimes almost to the point of extinction.

> If Nature wasn't kind, how did we make it for those hundreds of thousands of years? The majority of humans died. Sometimes almost to the point of extinction. The ones who got lucky or got the right genes survived at least long enough to pass their DNA on to the next generation. Which is the one thing natural selection optimizes for. When you say "we" made it across hundreds of millennia, you're excluding the countless evolutionary dead ends that far outnumber the rest. Nature isn't kind to us, and we aren't immune to many of its dangers because on average it's not enough to kill us before we can create offspring. We rely on technology to handle the rest. Like avoiding sickness because even when not deadly it's not pleasant.