Well, I do not agree that we (humans) aren't "taking care of" ourselves. I think we're taking great care of ourselves, as evidenced by the fact that life has continually gotten better (on average), since the beginning of human history. We could always do better. But, that's not the same as doing poorly.
Just because it has been true for a short time doesn't mean it will stay true, antibiotics once readily available, could now be unusable over the next decades leaving Humans again vulnerable to simple infections our ancestors died from, all this gain and loss happening in roughly 100 years, a drop in time, our food crops are constantly injected with wild genes to improve survivability of those crops, if we have no more wild varieties our very food supply is at risk over coming 100 years, taking even bees for granted has been a huge threat, bees need a healthy wild landscape to thrive, which includes many species not directly seen as beneficial to us