So far as I understand God created all that exists for man (am I wrong in that assumption?), if that is the case then why is the universe so vast? Seems to be a huge waste of space seeing as how man's purpose (whatever that is) should be achievable on Earth.
Well, this is the sort of question which would apply to a being who was limited in some way. If it cost extra time or trouble or money to make the universe that big, then it would be reasonable to ask why bother? It can only be a "
waste of space" if space is something that the creator has to economize on. But if the creator is omnipotent, then I'm not sure that the question makes sense.