In my eyes the bible has more or less a learning and a metaphorical character than a historical one. If you see Eve and Adam, for instance, several priests will admit that one has to regard it as analogy but as the true development of mankind. The reason for this exemplary story is that Christians should learn to act after the will of god.
Same holds for a lot of other stories, too: Noah, Jonas, ...

In my personal opinion I believe in natural science and in the slow evolution of mankind without any outer influence. But nevertheless, the bible, the quran, ... act as great tools to communicate and teach social values!

In contrast to my belief I wish we were brought here by aliens. This would make science and life more interesting