I'm genuinely a vegan because I think racism is wrong.
Single cells don't have a mind either. Minds are made of neurons. An embryo begins developing neural cells during the fifth week of development. That's just a few neurons, though, not a full brain. A fetus doesn't get smart enough to process sounds until the late second. If a mind isn't even complex enough to process any sensory information, is it more deserving of life than a cow? Cows like to run in the grass and play. They have social relationships. Fetuses aren't that complex.
If one human's inner life were more complex than another's, would you value their life more?