Why God is not the creator
An idea that is very prevalent in Cristian philosophy is the vision of God as the creator. The Bible describes how God created the world in six days and, becoming somewhat tired, he took the seventh day to rest.
The Vedas, however, offer a different idea: God is too busy playing His flute and playing with His friends and girlfriends to be concerned about such petty matters as creation or destruction of this material world. Nietzsche once said that “I would believe only in a God that knows how to dance", that's Krsna.
It's actually very easy to understand why God doesn't get involved with the creation of this material world. Although the CEO of a big company may give sanction to the construction of a new office building for his company, he will certainly not be the one laying the bricks. He will organize things in a way that someone else will make the project, someone else will supervise, and someone else will do the hard labor.
Similarly, the owner of the company may not be involved with it at all. He may just employ competent people to do all the work so he can just relax and enjoy with his family and friends. That's exactly what Krsna does.
Krsna does not get involved in the hard labor of creating this material universe. Instead, He does everything through His expansions and servants. He expands initially as Lord Balarama and He in turn expands Himself in all other forms. One of these expansions is Lord Maha Vishnu, Who lies down in the causal ocean and emanates the material universes from His pores. He then expands Himself into each universe, as Garbhodaksayi Vishnu.
Still, even as Garbhodaksayi Vishnu, God has better things to do than to become involved with creation. He is busy laying down in the bed of Ananta Shesha and being massaged by His eternal consort, Laksmi Devi.
Instead, He creates Lord Brahma, and empowers Him, so he can create the universe. Brahma then creates the different demigods and prajapatis that run the show. Although Garbhodaksayi Vishnu is described as the maintainer, He just gives sanction. All the hard work is done by His servants.
Similarly, Mahavishnu expands Himself as Lord Sadha-Siva and he in turn expands himself all the Shivas present in each material universe, that take charge of the mode of ignorance and the destruction of the universe when the time arrives.
To create the universe is actually not such an amazing feat. In fact, Krsna gets it done automatically through just a fraction of a fraction, of a fraction of His potency. As He explains in the Bhagavad-Gita (10.42): “But what need is there, Arjuna, for all this detailed knowledge? With a single fragment of Myself I pervade and support this entire universe.” He himself has much better things to do. He is a God Who can dance!