Evolutionists operate on faith just as surely as any creationist. Each person carries presuppositions to the evidence. Evidence and data may be regarded as neutral, but there aren't any neutral people are there?
Personally, I believe in evolution and intelligent design, but scientists who adhere to young earth creationism are applying the scientific method (so far as it can be imperfectly applied to evolutionary hypotheses) to their work just as surely as atheistic evolutionists - in my opinion.
You are incorrect in one regard...legitimate science simply seeks a provable answer. Creationists seek a
particular answer. As stated, if evidence emerges which contradicts evolutionary theory, it will be modified or discarded at that time.
Scientists do not, as a rule, "marry" a theory. In fact, evolution is almost constantly tested and refined.
I fail to see where "faith" comes in to play in science. The scientist either has evidence and repeatable results or he does not. If he does not, the method demands that the theory or conclusion be rejected, or altered.
Those who claim that evolutionists engage in "faith" of some sort only seek, once again, to blur the distinction between science and creationism. They are in no way that similar.