Speaking as someone who grew up in a slightly more cruel world, but still received way more kindness than previous generations (did not die of previously deadly respiratory complications in childhood, got accepted into gifted children program for enthousiasm, not IQ, got recommendation letters for the same reasons, short sighted, ADHD) in my self evaluation, each time I got a break it spurned me to work harder and try more to "pay it back", and every time I powered through strict evaluation and scrutiny it left scars that overall impede my productivity/would do so if I had not gotten therapy to overcome them .
Nature is cruel, but also inefficient. We have long since started building a "rela world" full of safety bubbles that let us thrive. Why not continue with this one?