It so is! Besides being packed with vital vitamins (A, iron, B’s etc) as well as nutritional fats/lipids, our bodies also have many protease enzymes in our guts that break it down into essential proteins and amino acids, which ultimately make digestion easy and not difficult as many will say. Contrast that with our lack of cellulase enzymes or a sophisticated multiple gut fermentative system in order to break down cellulose plant cell walls / plant matter, then it’s clear to me meat is an important part of our diet (as is some plant matter for roughage, some vitamins and general gut motility).