If you are interested in these questions I think it will be worth it to spend some time and do a bit of research, no?

You can look up Peter Singer and Yuval Noah Harari to start with and read what they have written about this. I mention them because they write well and mainly stick to scientifically supported ideas.

I haven't decided where I stand on the issues yet, but with a little research it has become apparent that you can have a very healthy diet without any protein form animals.

I've also discovered that more and more philosophers, ethicists, biologists etc, are starting to make the argument that our factory farming of animals may be the the worst crime in human history.