If you wouldn't kill a human, you shouldn't kill a non-human animal. Morally speaking, there is no distinction, as both are sentient beings with the capacity to feel pain. A difference in species alone does not justify moral discrimination; a Homo erectus could qualify as a "person" despite being another species. Intelligence is not a reason, when humans with low IQs aren't killed. An animal's life is worth more than a momentary taste sensation. What is your rationalization? There isn't one.