Well, there are children dying in parts of the world. Is it morally ok to give your children birthday gifts, take them to movies, and help them pay for college, when that money could be used to save the life of a distant child?
Noted vegans like Peter Singer argue that it’s not ok. If a distant child’s life is at risk, then, you must prioritize all your gifts towards helping the distant child. He uses the same kind of reasoning for his vegan arguments: a child is equivalent to a child just as a dog is equivalent to a pig.
I think that’s ridiculous. “Irrational” or not, humans will always prioritize those close to them, whether their own children over others or their own pet over random animals.