It would be nice, but I would not force or enforce it. People would prepare delicacies from animals I appreciate. I would hate it, though I'm sure it'd taste good. I would see no reason why it should be enforced. Much the same with everyone else.
People are different.
I do not like people who are selfish, greedy, ungrateful, or ignorant. That does not mean I would force them to change, otherwise they would never change by their own free will. I don't understand. Okay, kids for example. Parents know what's best for them.