Your choice (God did it) is comfortable to many for the reason you cite. It is unsatisfactory to many others for these reasons:
Who made God?
Where did God reside before he created our universe?
Why are the rules of our universe (the principles of its structure and interactions) coherent and discoverable? This should not necessarily be the case if the universe was created by a capricious God.
What existed before the universe?
There are a lot more metaphysical questions, but I will leave you to parse these before spending a lot of time posing them.