I’m diabetic and allergic to legumes. It’s nearly impossible for me to get enough protein or complete protein without excessive intake of either legume derived protein or carbs.

Beyond that, I like meat and feel that eating meat is part of a natural state of being. I find that factory farming has other issues and most don’t eat enough head to tail profile for appropriate nutrition though.

Aside: I think another large issue is that most people aren’t eating enough healthy balanced fat profiles, and get too many fats higher in linoleic acid which is more problematic. Most natural sources of unrefined and specifically animal protein are generally 0.5g fat to 1g protein or higher. The eating of animals combined with cooking food are what allowed homosapiens to evolve. Not that I fault those who chose a vegetarian lifestyle, though the religious zealotry is a bit annoying.