Because emotions are an evolutionary adaptation of social organisms. I don't know about God, but I'm emotionless because I'm a cyborg badass.

Of course, claiming to understand God is a statement of pure arrogance, and even so, under any kind of scrutiny, the God-concept falls apart quite readily.

Although I am not interested in logical "proofs" of the existence or nonexistence of god, there is an important non-academic common-sense issue to be addressed here.

Of all the objects in the universe, only living things have needs, desires and goals. Rocks and lakes, planets and stars, galaxies and nebulae are indifferent to their own fates. Only us evolved beings have interests.

What programmed us living beings to care about ourselves, each other and about the world at large? Natural selection, obviously. Being indifferent to one's surroundings is a very bad survival strategy.

But what about god? Theists tell us there is a god who "wants" us to worship him (and to stone to death disobedient children, etc.), "listens" to prayer, and so forth and so on. But they also tell us that their god is one of a kind, neither evolved nor designed. But how could that be? Non-evolved things do not care about anything: they have no interests.

Theists tell us god is moral, but how is that possible? We humans got our morality from natural selection, but where the devil did god get his? Our morality benefits our genes because it allows us to cooperate with other humans, but why would a god need a capacity for cooperation? With whom would an omnipotent being cooperate and why?

God, as theists imagine him, is a social being -- a meme machine like us. He acts like a human -- like a spoiled child, actually. Clearly god did not make us in his image. We made him in our image.