> I feel like most people are like one or two a-ha insights away from veganism. Intelligence and awareness definitely has a spectrum across the animal kingdom but I’m not so sure about sentience itself. Do fish feel pain? Do insects experience fear?

The only people who don't think animals feel pain are people who don't spend time with animals. Every farmer since the neolithic has known that animals feel pain and are to some degree or another intelligent (we intentionally bred some of the intelligence out of many.) That has no bearing on whether someone eats meat or not. You have assumptions that most of the world do not share with you.

I feel bad if I see a fly slowly dying, but I'll still kill all houseflies that bother me. There's no contradiction in that. Death isn't suffering; quite the opposite.