So many people want to say that some stories in the bible are metaphors. Some of the evil stuff god does in the old testament, the story of adam and eve, the story of god making the world in six days all come to mind. So with that in mind, who's not to say that the story of jesus wasn't a big metaphoric story to show you how to be 'saved' and express god's love?
I think you have either buy into what's in the bible completely and purposely ignore all the contrary evidence, that is, not think because you want reality to be what you want it to be. Or, you have acknowledge that some of it is wrong or not meant to take literal, but then it becomes anything you want it to be, your own personal christianity built on a framework of the bible but really based on very little and sort of made up and different person to person.