 Well, the negativity effect evolved because it helped keep our ancestors alive. As we say, life has to win every day. Death only has to win once. It was more important to pay attention to not eating poisonous berries than to really savoring the good ones. You had to pay more attention to predatory lions. If you miss out on a great opportunity for good food or sex or any other life-affirming thing, well, okay, that's too bad, but you might