God and Satan are not equal in power, God is stronger than Satan and could easily get rid of him, but he works in mysterious ways.

Birth defects are a hard subject. Perhaps there's a reason why you have it, so that you can bring comfort perhaps to others who hav eit? To tell them that you know what they might be going through?

God has a special plan for all of his children, even the ones that claims he doesn't exist, but it's our choice if we follow that path or not. Maybe yours has something to do with your defect? Maybe something completely different.