These are societal preferences, not mine alone. That's why they work. That's why we don't have people with pet dogs walking past skinned dogs for sale in this country, people with pet dogs living next door to dogs being beaten to death for their meat, as they do in Asia. There are some things societies make rules about, and one of the things we've decided we don't want to see is our dogs, cats, and most say horses, being eaten. If you like the ideas of those countries, you'll fit in there easier than you will fit in trying to convince us to eat Rover. Or our horses. There's no market for horse or dog meat here, and never will be.
I don't want to convince you to eat anything. You can have pet chickens and pet hogs too for all I care.
Personal preferences is not a good basis for making laws. You are free to eat and not eat whatever you choose, respect others and afford them the same.