As I understood your argument, you primarily don't like the idea of eating animals based on your beliefs, and you would oppose it even if animals were the healthiest food available ever. So I don't think we contradict each other here — I've heard you, and I understand your ethical position.
> And a bunch of stuff a human body can/should synthesize
You're 100% correct here, I am aware of that. For example, if you only eat meat, your body will synthesize glucose which it would be otherwise lacking (which technically means that meat does not contain the "optimal amount" of sugars).
> Remember healthy eating is also NOT getting stuff you don't need and synthesize
And also getting stuff that a body cannot synthesize enough. Like the notorious B vitamin pills that vegans pop like candy.
> It's just an excuse to justify a existing taste for meat
No excuse needed, god (or nature) made cows delicious — what do you think is the reason for that?
