@Felix and whoever else pinged me.
Idon't know the statistics but based on the amount of plant food a Vegan eats times 8+ billion it does not even seem close to achievable it's not the same as making room and putting rescource to growing hat and corn. We feed cattle and other animals easily grown foods like corn for a reason, many eat grass land and hay. What you are proposing is just one evil over another as the farm land for growing certain plant and space for vegetable would have to be increased drastically, natural habitats and forestry would see a massive surge in destruction even faster than today from poor farmers in third world countries and then there is the issue of a bad harvest. Animals don't suffer from blight or other agricultural issues based on the weather so there would be potential food shortages that would easily lead to wars, hence why I said it would result in world war 3 and yes, it happens and to a degree that is pretty fucking scary considering we manage to navigate it yearly.
Not to mention the amount of asshattery and negative shit that the mood swings would have on every day life as well as the shear amount of time that would have to be allowed to worker so they can keep their diet in check. It would literally destroy the world as we know it and have the potential for great harm in so many ways.
Yes it is awful that we kill animals but we do it humanely, I believe we should have more open farms like in Europe rather than your American nonsense of mass herds kept in small enclosed ranches, where the animals can live just as they would not the wild and increase the age an animal can has to be raised before making it to the abattoir. This is a much more achievable goal than making the whole world a vegan mess.
There is always one aspect of this debate that Vegan fail to realize and that is putting farm animals back into the wild, when we all go Vegan in this utopia we have no incentive to take care of farm animals and they would be condemned to the wild, decreased in numbers and suffer from a slew of awful disease that we keep away from them. Have you ever been to a farm that Is in the mist of a spread of something like clostridial, I have, and it is not pretty to see animals waste away and die in such an almost zombie like state and then there is the issue of space for them, there is so little free grazing land left and in this Vegan paradise there would be need for so much more, where do the cattle go past the fences? Where fo the chickens go without the safety of theor hennhouse? Where do whores go? The thunra do be condemned to freeze to death for wandering to far north one winter? That's another thing we fo, protect animals from, nature and themselves.
We literally breed the animals, give them existence that they would not have on a human inhabited modern Earth. Are you lot going to deny thier extence if only it is for a brief time or are you going to condemn them to horrible diseases, to harsh winters they have long sense lost the instinct to weather themselves, the anxiety of being pushed back into smaller and less favourable habitats by humans who no longer can afford the time to bother and all the ills that entails. You just don't think of outcomes and expect everything to be this perfect set of ideals that manifest in reality from what floats around in your head, well nature doesn't work like that and nature is going to be a right cunt to these animals and not give the mercy of a quick death.
What you all should be fighting for is the basic right of animals to be given space and an extended period of life with more foresight and harsher punishment for Farmers who breach that right, and much, much more inspection of farms while to check on the livestock well being, which shouldn't be too hard in this day and age. Increasing staff of agencies that are assigned to keep track of this sort of thing would be one route. For the love of God, do something reasonable or do nothing at all, Alexandria Ocasio Cortez is a laughing stock with the stuff she is proposing and diminishing the attention of future proposals by going so over the top and absurdist.
World is based on economy. So if eating animals were ban all farms and the like that have them would have to release the cattle (who would likely die to famine or predators on the are) to replace with crops.
So basically they would be condemning all cattle to die.
Also a good point that you didn't put is that a lot of cattle is created in open areas with some wild life and forest, while crops are done replacing natural life totally.
There were a good post in brazil recently showing that farms in Brazil that deal with cattle preserve much more nature than ones that have crops and off course all of them are much better in preservation than cities and people in cities.
I don't see vegan trying to zero electrical consumption as it burns coal, flood rivers and other environment impact, they also don't forfeit their iphones and macbooks that have batteries with giant capacity to pollute water when land disposed, etc.
As you said in the other post. Much better to leave people from the countryside legislate about how they have to do instead of city folks... unless city folks want countryside legislating in their lives and perhaps forbidden over 1 floor tall construction, demanding all houses to have at least 80% area of vegetation, etc.