Right, I'll remember that when I'm practicing medicine. "Sorry, mate, it wouldn't be right to treat you. Survival of the fittest, ya know?"Yeah, if there was no survival of the fittest, we'd all still be in a primordial ooze.
At the risk of evoking Godwin's law, I'd like to remind you of your own arguments against regimes that get their morality from Darwinian evolution.