You're conflating survival with success in passing on genes. They're very different. The most obvious example here, and one that goes all the way back to perpl

You're conflating survival with success in passing on genes. They're very different. The most obvious example here, and one that goes all the way back to perplexing Darwin, is peacocks. Male peacocks (which is a tautology - 'female peacocks' are peahens) have absurdly enormous tails and their entire body screams 'Hey, I'm here - come eat me.' And predators do just that with much greater ease than they do for peahens. But ladies dig the peacocks with the biggest, loudest, most absurd set of feathers - and so that's what we get. Evolution is fundamentally not so much about survival, but about passing on genes - having babies. Surviving longer generally correlates with this, but evolution would happily pick for shorter life expectancy in exchange for a greater probability of passing on those genes.