At the end of the day, you have to ask yourself why you're following this religion in the first place. If there wasn't the promise of salvation, would you just jack it in and ignore everything that God has taught you? Of course you wouldn't; we're following the Christian way of life because we think it's the best way to live, and with that in mind - who cares about the historical accuracy of the bible? If Jesus never ascended into heaven, does that invalidate everything he said about loving your neighbour? If Moses wrote the Ten Commandments in his tent instead of getting them from God on Mount Sinai, does that make theft and murder OK?
That said, I view the Bible as a historical and philosophical book, written by people who were inspired by God. Now, that means that their preception of events was probably mostly accurate, but will have had gaps - just like any other history book, particularly one from the time (Tacitus, for example, presents as fact a Roman woman giving birth to a snake) - which will have been filled with hearsay or plain improvisation, and the philosophical parts will include existing beliefs (hence the prejudice, inherited from old Jewish law, found in parts of the New Testament against gays) or misinterpretations by the writers. It's up to us to read the thing and work out which are the good parts and which aren't, and we can do this because we know, from our daily experience, what this God fellow's like and we should be able to immediately spot something in the Bible which is clearly not in line with his nature.
