Moral high ground is when people act in a good way and make good choices that are helpful and kind to others. It's like being the good guy in a story. Imagine if you and your friend were playing and you shared your toys with them and also helped them clean up their toys when you were done. You would be on the moral high ground because you were doing things that were kind and helpful. It's important to be on the moral high ground because it makes people happy and shows that you are a nice person.