1. What to do with the current population? Mainly, stop breeding them.
2. What do you replace it with? Not actually a problem.
3. What do do with communities? Without a socialism, they are fucked. This applies to so many industries that need to be abandoned, and the communities built around them.
4. How do you convince people? Some people, you can't. Others, through education. Vegan numbers are rising, but I'm sure there's a very low ceiling.

I heard Germany is planning some form of meat rationing.

A second difficulty is: what do you replace it with?

So many less wealthy counties get by on a diet based around legumes. We can do.

A third difficulty: How do you do it without devastating communities based on livestock farming?

So much of livestock farming is huge mega businesses with terrible labor practices. The quicker we see them off, the better.

A fourth difficulty: How do you convince people to do it?

The vegan movement is exploding. Honestly it's getting easier and easier, and it's getting harder and harder to make excuses.

Amazing job on going vegetarian. BTW I've been vegan for over a decade, and I'm not crazy about fake meat. I think that once we get used to the new lifestyle, we stop craving what we once had as kids. But by all means enjoy the fake meats of they help you transition though.

We have to transform everything in society to adapt to the oncoming ecosystem. That especially includes diet. Factory farming meat and 'farming' the oceans is going to be over soon, one way or another.

It can be difficult even being a vegan if you’re a rich westerner, let alone if you’re poor or from anywhere else in the world

This is where I stopped reading lmao, what the fuck? There's entire 'third world' cultures that are vegetarian and vegan.

You know how much farmland goes to feed livestock? We would all be drowning in cheap delicious and nutrient rich soybeans. Fry em and a top with BBQ sause and nine people out of ten couldn't tell the difference between it and meat. For the last one you just add mushrooms and spinich before you fry it and then you are set.

How do you convince people? "We need to do this or we all die" that's how. If they don't like it then they're idiots that don't get a say in something they obviously don't understand.

your other questions have been answered well by others here, but i'll just throw in my own prediction: i think the future will be mostly vegetarian, with rural or suburban chickens producing eggs as a primary meat based protein source, very rarely eaten and well taken care of (basically domestic yard chickens, which tend to be really sweet for birds). you may have a few community dairy cows that graze freely that everyone gets some milk from and cheese may be made for local consumption. and in some parts of the world, local hunting may provide occassional meat (deer, etc). but industrial meat industry is dead whether the climate, the market, or a glorious socialist revolution strikes the killing blow.

I hope some of these issues can be solved by lab-grown meat which gets rid of almost all of the ecological and ethical

Ethical, sure, but I strongly doubt lab-grown meat, if done at the same scale as current meat production, would get rid of "almost all" the ecological concerns. Less ecological impact, sure, but you'd still need to manufacture shittons of stuff - and lots of power to run that stuff - to do it on such a scale.

Also, why are Abelisauridae dinosaurs the worst ?

As the guy that did an AMA about being a butcher's assistant yester I just want to say I'm not super pro-meat. A lot of it for me is a cultural thing and I enjoy non meat alternatives (paneer, tofu, falafel to name a few) even more than meat a lot of the time. When I'm with my SO I literally don't eat meat at all and I'm fine. When I am with my parents/grandparents I'll eat meat more often. Meat is horrible for the planet and should eventually be phased out. I have no idea how though. o7 to vegans and vegetarians.

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Personally-to a great deal of embarrassment and shame

Look pal, that's not gonna help anything. Work through things the best you can, just like everyone else is doing.

"It can be difficult even being a vegan if you’re a rich westerner" huh? wut

I don't think the livestock industry will ever fully go away. I think the biggest immediate solution would be reducing meat production without it just shifting prices up for the meat that does get produced (which would, in turn, just continue to lead to meat being wasted). And I think that's a hard problem to tackle, because it'll probably need tackling way before capitalism is defeated.

I mean surely there must be a better way than just animal genocide

It literally happens daily so, what's the difference?

It's not like someone is gonna pull a switch and suddenly the meat industry will just stop either.

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