Now let's get to the meat of the issue. ALL human food production causes non-zero emissions, yes even the food you eat. Yes even if you grow it yourself. According to the link you provided "meat accounts for ~60% of green house gas emissions from food production." I would say, so what? Humans need to eat food and some food production is going to emit more green house gases then other food. Trying to optimize our diets to reduce our impact on the world at the expense of enjoying that world is something no one actually wants, including you. At the end of the day everyone has to eat food. So you say "But if we just cut meat production, we would reduce the green house gases of food production by 60%!" Well in less then 80years, the population of the earth is projected to be ~11billion. That is ~50% more people and thus 50% more greenhouse gases emitted from food. So now what do you now?

It's 2100ad, and we got rid of meat 80years ago, along with 10,000 years of human culinary culture and animal husbandry, and now we are right back where we started as far as green house gases (though probably worse because fossil fuels are still around). So what have you solved? What did destroying a huge part of the essence of human society accomplish? Hundreds and thousands of cultures were told that because burning coal and natural gas is cheaper and certian people will get rich from continuing to do that, those billions of people can't have certain kinds of food anymore. That's not a deal anyone will take, nor should they.

The problem is that people are mean to animals? Sorry, I don't see that as a problem at all.

We should destroy all human culinary culture and eat only what is the most efficiency use of land? Why?

Your solution to the environmental damage caused by agriculture is "eat less food." That's not a solution at all! My solution is that amazing experiences that human culture and society can provide us is 35% of the problem so let's address the other 65% because that's the shit that doesn't make life worth living. Shipping consumer electronics 8,000 miles just to throw away within a year doesn't make anyone happy. Spending 2hours a day commuting via car to some shitty office so that you can sell more consumer junk doesn't make anyone happy. These are the things that should be changed. The fact that people eat different food then you should be celebrated. Human culture is awesome and a world where we all eat the same food because it's the most efficient isn't a world worth living in.

And the grand Reddit-tier ableist carnist finale:

I suppose it's a deep seated psychological harm inflicted by your family when they forced you to eat dinner that one time. I hope you get the help you need, but unfortunately you will not find it here.

Adeiu.

This shit is dire.