As I have discussed with my children in science classes, I do not believe in Darwinian evolution and I believe the earth and physical universe are relatively young. On the other hand, I am not so opposed to some sort of evolutionary process should such a process actually be demonstrated to be factual rather than the scientists simply declaring it a TRUTH that cannot be questioned despite the complete lack of physical evidence that they had said (when the theory was first being widely accepted) should be abundant as more fossils were found.
Furthermore, an old earth would not shake my faith though, again, scientists have established a TRUTH that cannot be question despite the fact that every dating method they use makes assumptions that necessarily establish a very old earth. For crying out loud, rocks formed in 1983 in the Mount Saint Helens volcano were dated to be more than 300 thousand years old! If that alone does not shake one's trust in their dating methods, then an old earth is simply one of many doctrines in a religion--it is not science!