[Andr�s]

You're also forgetting a fundamental difference between science and religion.

Science accepts its own flaws and limits.
A theory is the current best explanation, and can be disproved or enhanced by new research, observation, mathematics examinations, and experimentation.
Most laws have several conditions and parameters within which are valid.
For example Newtonian mechanics cannot be applied to sub-atomic particles or near-light "relativistic" speeds, but are still applicable to most "normal" mechanics that rule our everyday world.

On the other hand religion (not only christianity) is based on texts written about two thousand years ago, and not subject to change.
Limitations are only defined by the "faith" and judgement of the reader.

The most fanatic believers will blindly accept all scriptures as the literal absolute truth, and deny anything that contradicts them.
Others will be more liberal, even if they believe the scriptures are truth, they will know that the scriptures were written as a guide for the people of their time, and considering how they saw the universe, that many of its teachings are timeless truths but some are not applicable to the modern world.
Science is not opposed to religion, but complements it.

As a matter of fact, many renowned scientists do believe in god and actively practice a religion.

ISTR some of the scientists researching about the Big Bang saying something like "We're not trying to deny that god created the universe, we're trying to determine how He did it."