Vegetarianism as a moral position is no more coherent than saying that you think it morally wrong to eat meat from a spotted cow but not morally wrong to eat meat from a non-spotted cow.

People need to be educated so that they can make intelligent moral choices

It's really not rocket science. If animals are not mere things; if they have moral value, we cannot justify eating, wearing, or using them particularly when we have no better reason than palate pleasure or fashion. If you are eating, wearing, or using animals, then your actions say that you regard them as mere things, despite what your words say.

We can no more justify using nonhumans as human resources than we can justify human slavery. Animal use and slavery have at least one important point in common: both institutions treat sentient beings exclusively as resources of others. That cannot be justified with respect to humans; it cannot be justified with respect to nonhumans—however “humanely” we treat them.

We do not think clearly about our moral obligations to animals.

99% of our uses of animals, including our numerically most significant use of them for food, do not involve any sort of necessity or any real conflict between human and nonhuman interests. If animals matter morally at all, then, even without accepting a theory of animal rights, those uses of animals cannot be morally justified.

Being vegan is easy. Are there social pressures that encourage you to continue to eat, wear, and use animal products? Of course there are. But in a patriarchal, racist, homophobic, and ableist society, there are social pressures to participate and engage in sexism, racism, homophobia, and ableism. At some point, you have to decide who you are and what matters morally to you. And once you decide that you regard victimizing vulnerable nonhumans is not morally acceptable, it is easy to go and stay vegan