People choose vegetarianism for different reasons, not only compassion for animals. Those that do it for animals but still drink milk could be unaware of how da

People choose vegetarianism for different reasons, not only compassion for animals. Those that do it for animals but still drink milk could be unaware of how dairy operates, or they could be making an effort to be more humane than average, while under constant counter messaging from the food environment around them. It's a wide spectrum, vegetarians aren't a homogeneous group.