A valid concern many religions have about Christianity is the concept of "God becoming Man." How can a being, who is perfect, become man, who is imperfect? This would mean that God changed which is contrary to the nature of being perfect. When you are perfect, you cannot change. Therefore, God cannot become man, because that would mean he was imperfect to begin with.
It's an interesting paradox, but the answer makes sense when you hear the explanation, "God did not change." To properly understand this, we need to switch perspectives. To us, it appears that God changed, but not from the perspective of God. Let me bring you back to the analogy of a virtual world where you are a god.
In this analogy, you have complete control of the virtual world. You are its god. You decide to become one of your characters. Are you still the god of that world? Yes. Do you lose any of your "Divinity"? No. Do you still have perfect control and know everything? Yes. If you maintain your Divine Knowledge and stay perfectly virtuous, nothing changed. That is how it looks from God's perspective. And if God is perfect, even as a character in his creation, he would be perfect. There is no change. In fact, it is perfectly God's nature to have become man, because God is Perfect Love.
If God is Perfect Love, he would perform acts of love. A great act of love therefore is to become man, dwell among us, teach us how to love, and give us the perfect example of love. Why? Because that is what is best for us. By us having a perfect model and teaching, we are able to love more and become perfect. Also, by God becoming man, you have the most definitive authority for establishing a religion. No other man can establish a religion better than a man who is God, especially when the religion is about True Love.
N. D. Moharo
P.S. The prompt for this topic was how last time I suggested that the mentally handicap from birth are angels incarnate. I don't know if this is true or not, but I wanted to address the argument that "Angels becoming man would lower their nature." It wouldn't because they would not lose any of their angelic nature. Instead, it'd be a perfect showing of their angelic nature as the purpose of their life on earth would be to bring people closer to God. They are God's servants and therefore would gladly accept this task. Of course, since I am not an expert, I can be completely wrong.