I still want to get to the ethical core of the problem
I will agree that eating vegetables (non-organic) is more sustainable and resource heavy than animal breeding.
I would disagree that eating meat is unhealthy for you or that vegetables are healthier, your body doesn’t care where you get your nutrients from, it only cares what and how much of it you get…
But the main issue seems to be cruelty to animals and even the eventual killing of animals for our nutritional requirements (which happens no where else in nature

).
Now I want to envisage two hypothetical scenarios and for vegans/vegetarians to tell me if in these scenarios eating meat is acceptable, if not why not?
Scenario 1
The replicator, meat is made atom for atom, with no side effects and no animal is used, it is exactly the same as meat minus the brain usually required to grow it. It is made by restructuring atoms to make up meat. This is a non-existent technology and is purely science fiction, for now.
Scenario 2
Freerange Farming, If animals were not stressed and lived in peace and harmony (more so than can be said for their counterparts in the wild) being fed well and living well. Up till the point where they are killed instantaneously without ever feeling pain. All of this is done with the purchase of carbon credits to balance out any additional carbon produced as a result and the methane is collected and used for fuel.