Humans like eating meat because it is nutritious. It is not just a random preference and it is not something that anyone can just switch off, therefore it is not a matter of morality, as you are trying to portray it ("If you love meat and are willing to burn the planet down so you can keep eating it...").
It is possible our taste for (cooked) meat gave us an evolutionary advantage that made us who we are today:
However, accessing more calories was not the primary reason our ancestors decided to cook food. “Scientists often focus on what the eventual benefit is, rather than the immediate mechanism that allowed our ancestors to make the choice. We made the choice because of deliciousness. And then the eventual benefit was more calories and fewer pathogens.”
Human ancestors who preferred the taste of cooked meat over raw meat began to enjoy an evolutionary advantage over others. “In general, flavour rewards us for eating the things we’ve needed to eat in the past,” said Dunn.
In particular, people who evolved a preference for complex aromas are likely to have developed an evolutionary advantage, because the smell of cooked meat, for example, is much more complex than that of raw meat. “Meat goes from having tens of aromas to having hundreds of different aroma compounds,” said Dunn.
https://www.theguardian.com/science/2021/mar/07/how-early-hu...