^^
It's pretty certain that Jesus (if he existed, even that's debatable) was not born on december 25th. That just has became the accepted date.
However, you are completely correct, the bible should be taken as metaphors and such. I believe that would have been the original point of the religion, but the evil of man has perverted it so far from that, it's truely unbelievable. Also, another point that's fun to point out to anyone whoe believes that any religion is the "true" religion....Greek and Roman mythology was once considered "the truth" and now it's relegated to being thought of as almost comical. 2000 years from now, I feel alot of religions that we now have will be taught in much the same fashion. The first person who can tell me why they believe in Jesus, the christian god, etc, yet think that the idea of Thor throwing lighting bolts to earth is preposterous will truly amaze me.
As for your question of a religion to combine christianity and science, there really is none as they pretty much are the antithesis of each other. Unfortunetly, the best option is to learn about each religion (a heresy to many religion, which should show you that they are more cult-like than anything), learn about science, and believe what you want to. Not one person has the answers, no matter what priests and popes would say. However, for people to ever realize this, they would have to do some actual thought, and being spoon-fed easy to swallow answers from a story book is much easier than trying to figure out life. Without some book telling you that you are a wonderful miracle, you might find out you are just a carbon based lifeform for a speck of time of the universe, on a non-descript planet, orbiting a 'normal' star. If you let that sink in, you might realize that a religion cheapens that fact that you only get a finite time on this planet.