Meat eating is a complex matter - no time & space to cover it extensively here.
As I'm convinced, without forests the water cycle gets disrupted and the climate won't be able to support life as we know it [https://www.youtube.com/watch?v=kKL40aBg-7E - The Biotic Pump: How Forests Create Rain].
With cows, there is not enough land to even have forests.
And if we can agree that we don't need cows and dairy (plants can replace it easily), why not also remove all the suffering that's connected to the meat industry?
Sorry for the detour.