Does our technology and development "evolve [us] beyond our basic immediate needs" or do we use it to serve needs we've always had? We spend an enormous amount of our effort making both food and sex easier and more abundant (there's an app for that!).

Violence isn't a vice that could be eliminated if only people had more virtue. It serves a practical function. It's the ultimate dispute resolution mechanism for people who either have too little in common or too much at stake to resolve their issues in any other way. Prosperity, abundance, and homogeneity makes it less necessary over time, but so long as conflict is possible between people, violence will be the final resort for resolving it.