Norman Geisler, a pre-eminent apologist and clear thinker wrote 6 brief pages on trying to better understand the age of the universe. You can read them here. I thought this was perhaps the most important paragraph:
If the Young Earth view is true, then so be it. Let the biblical and scientific evidence be mustered to demonstrate it. Meanwhile, to make it a tacit test for orthodoxy will serve to undermine the faith of many who so closely tie it to orthodoxy that they will have to throw out the baby with the bathwater, should they ever become convinced the earth is Old. One should never tie his faith to how old the earth is.