1. Why did God create the world, mankind and everything in it?
If a well versed scientist gives an excellent speech, one would not question why was such a good speech given by this expert?! Because he has the knowledge and expertise in the field that he is able to express his views. However, if this same scientist, with all the experience and knowledge, remains silent, the question will then be why nothing was said.
God has the ability and wisdom and mercy to create from soil; wheat, and from wheat; sperm, and from sperm, a complete human being. And if He did not create this complete and perfect creation, the question should in fact be why is it that with all His Power to Create, He did not?