Continuing where I left off: “ If we evolved with emotions to ensure survival of the species, how does that explain hate, war, murder, stealing, etc?”
In simplest terms, we developed to look out for our own people, to empathize and love our families and their families and their families—- the close network—to survive. At the bare bones of it, stealing, murder, war, and hate evolved from self-preservation combined with the competition with other clans/families/small communities (or hell, other packs of animals) for resources.
Land, hunting animals, natural supplies, food, shelter. If we empathize too much with our competitor, we cannot get ahead. It all boils down to making sure OUR genes pass on.
We continue to evolve, and the more demanding and intricate our requirements for survival (money, housing, job proficiency), the more convoluted.. .complex?... our emotional layering becomes.