Do you read poems mate?
Why the hell do people take stuff literally? I mean come on, there is a metaphorical usage of god here, what's the problem really?
It's really not in the context of being a "GOD", it's the fact that they can do things which no ordinary human can and they have a cult following since they are symbolic for their followers.
Robbie Fowler is nicknamed 'GOD' by us Liverpool fans. Our way of mentioning a special, special player. Same for Indian Cricket fans regarding Sachin.