Animal lovers tend to care more about other people than non-animal lovers. I don't think I've ever met a person who hates animals but loves people, usually if they treat animals like crap they treat people the same way. That's why they're so unlikable.
Humans aren’t animals. We are above them. Most people eat meat. Most people experience love from other humans. I dont think we all need to become vegan before we can master human relationships.