Why is that? In myself I see a common thread of where I recall "bad" things more strongly than "good" things. Is it an evolutionary benefit kind of thing where

Why is that? In myself I see a common thread of where I recall "bad" things more strongly than "good" things. Is it an evolutionary benefit kind of thing where avoid bad things is much better than running toward good things because if you're dead it's much more permanent than if you're happy?