Thiests -- or conservative/Fundamentalist Christians, to be specific -- who regard the multiverse concept as atheistic never fail to make me sick. God is infinite and transcendant, isn't It, with thoughts and feelings above those of humans? So why would God limit Itself to a single, solitary universe? It makes absolutely no sense -- a truly limitless God would create as many universes as It wanted, each with varying laws of physics.
Yet again, Fundies prove that they want to limit God, to make God as small as they are, with their limited intelligence and limited imagination. They want God to be an old man with a white beard who poofs things into existence for their benefit -- not a grand, omnipresent artist which embraces the infinite and the diverse.