Appeal to History Fallacy (Ancestors Tho)
You used an appeal to history fallacy to defend the exploitation of animals.
This fallacy is often manifested in statements like, “My parents, grandparents, and ancestors killed and ate animals so it’s okay for me to do so too.” The reality is that your predecessors also did a lot of horrible and widely unaccepted stuff that would never hold up as a justification. “It’s okay that I killed Bob because my grandpa was also a murderer” is a laughable excuse by anyone’s standards. This is quite literally a weak excuse to commit virtually any crime and is not a valid justification to exploit or harm animals – especially since it is no longer necessary to survive and thrive.