I heard something to do with Nitrogen and …cow farts(?) I am really unsure of this and would like to learn more.
Answer -
4 Parts
- Ethical reason for consuming animals
- Methane produced by cows are a harmful greenhouse gas which is contributing to our current climate crisis
- Health Reasons - there is convincing evidence that processed meats cause cancer
- it takes a lot more calories of plant food to produce the calories we would consume from the meat.
Details about the answers are in the comments
It is indeed about morality. Morality is about what is “good” and “bad”, so it’s perfectly in line with OP’s question “why is the consumption of meat considered bad”.
Religions have arbitrary morality so it doesn’t seem very interesting to discuss why these religions allow or forbid to eat their specific set of animals, unless you’re studying these religions.
Moral philosophy on the contrary tries to study morality with real arguments. In almost all cases they agree it’s bad to harm others while it’s not necessary. Even with our intuitive morality most people would agree with that. And in most cases eating animals products contributes to harming them and is not necessary. It was not necessarily the case in the past, but today it is. So eating animal products nowadays is immoral.
The environmental problems only adds additional harms on top of that by causing harms to even more animals, including humans.
I think you are assigning a moral value to “bad” that I am not. Things can have negative outcomes that are considered not ideal aka bad but do not carry a moralistic element to them. For example “the weather outside is pretty bad” does not contain a moral judgement which is how Im reading OP’s question
In your example the “bad weather” means “bad for me/us” (a farmer would probably disagree, for example, as would some animals). Indeed morality is about what’s “bad to others” or to everyone. But since OP didn’t specify to whom, I considered it meant “bad in general”, for the one eating and for the others.
OP included “Ethical reason for consuming animals” in the accepted answer, so answering about morality doesn’t seem wrong.