Do you think that animals have consciousness? Do they feel pain, fear? Is it moral for you to inflict pain and fear on a conscious being? What about 1,000,000 of those beings? Would you butcher a toddler for meat? What about an animal with similar (or more) depth of emotion and cognition than that? Is it okay because they are other species? What about the deforestation caused by animal agriculture? What about the impact on climate change? I think there are many valid moral arguments that you are outright dismissing with a mere hand wave. I hope you give it some more thought