If you regularly do this, you're shutting down conversation in such an extremist way that it is counterproductive. There's a campaign in my country run by some extremist animals rights group with signs that read (translation mine) "yuck! Meat is nauseating!". Their campaign gains little traction because it's both extremist and demonstrably false; most people eating an asado concur meat is delicious, not nauseating. That line of extremist argumentation -- just like comparing eating animals to pedophilia -- is going to lead you nowhere.