the whole depiction ban came after people started worshiping pictures of Muhammad, as they did the idols pre-Islam. Only one is worshiped, thats God.
So you cant depict him because a) the depiction is wrong, b) could be used in an immoral nature, like this thread, c) could lead to idol worship.
Depiction of Jesus is blasphemous too, dont think this is just about Muhammad.
As you can see, Jesus is being worshiped and not God in many "Christian" churches.
Statutes of Jesus have become idols in which people pray to which is blasphemous, the only one worthy of prayer to is God.