A very difficult question indeed. I am not sure if we even need to qualify the question with "as a Brahmin." If ethics are objective, why would it be ethical for 1 group or caste to do something but not so for another?
Assuming the question is about ethics.
There is a renowned adventurer by the name of Fiann Paul who eats only fish. His (and many other pescetarian's) ethical rationale is that fish are the only animals that they can kill with their own hands.
Slaughter is not pretty, if done with your own hands. I have done with fowl and jungle rat, and also carved wild boar. It makes you value the meat and food when you kill the animal with your own hands and see it suffering and die, or even to help cut part of the carcass. This modern disconnect between the actual killing of the animal and cellophane wrapped and sanitized meat on supermarket shelves is why most people, perhaps an entire generation or more has no respect for or understanding of where the food comes from.
If a society made it mandatory for all meat eaters to slaughter their own meat or interact with the animal's dead body in some way, I suspect that meat eating will decrease and become a lot more ecological overnight. Because human empathy is a real thing, and the foundation of all ethics and consideration for others.
My own life story is that I was raised in a typical Tamil Brahmin household and had never tasted any meat until I was 11 or 12 years old. I remember going to restaurants and ordering "veg biryani" or fried rice etc. while my friends would order chicken and mutton.
Fast forward to today and I am thoroughly deracinated and eat meat in nearly every meal. I have developed a rather Western palate with fondness for rich cuts of beef in particular. In my defense though I do live in the far east and (pre-pandemic) travel a lot, and also lift weights. I like to think that the restrictions on eating cow only apply to Desi or Indian cows. Of course, that would be sacrilege but nowhere in our scripture does it say anything about Wagyu or the cows in the pastures of New Zealand, Tasmania or Argentina. We have but only one known life after all and if you miss out on the flavor and eating experience of fine food, it is in a way a wasted life.
Organ meat is the most nutritious. If there is a true superfood in our world, it has to be organ meat- especially the liver of a healthy stress free animal.
