It’s not the microbiome, it’s the entire digestive system.
Not to mention that if predation stopped we’d all long since have been smothered in, among other things, mice.
It’s not only the entire digestive system: it’s the entire ecological system.
Haven’t read the thread, just the title (which discourse doesn’t make easy to quote); but I wouldn’t find it insulting to be killed by either wildlife or weather. Unpleasant, quite probably; but not insulting.
Under most circumstances I’d find it insulting to be killed by another human, though.
Someone did a YouTube video on this once. The Earth after 100,000+ years of no death resulted in layers of living insects hundreds of miles thick, living animals hundreds of miles thick, living humans hundreds of miles thick.
(Although that wasn’t just no carnivorism, but no death, period.)
Well, lots of snark is pretty on-brand for this board. I think I said some other things, but fundamentally it seems like you misunderstand the nature of collective action problems.
“Why do carnivores exist if animals could just agree not to be carnivores?” has the same answer as “why do bank robbers exist if we could just all agree not to rob banks?”
There are individual advantages to not agreeing is why.