As you point out the West predates Christianity by many centuries. I do look back on both Rome and Greece as part of my heritage and inheritence, despite being neither Greek or Roman. And the Western Slavs, from whom I am descended, did not convert to Christianity until forced to by the Tuetonic Order as part of the Norhtern Crusades.
I desire the West to survive. Christianity was central to the west for about 1400 years, and many of our greatest achievements were inspired by it.
None the less it now seems to have not only lost it's force here, but in many cases be an active agent of our destruction. One need only look at the many Christian organizations that are pro-homosexuality, pro-amnesty, anti-American, anti-Israeli, etc.
Perhaps that is needed in China and Africa (both notoriously repressive and prejudiced cultures)? Maybe we need something different now, just as Hellenistic Paganism was no longer relevant at the start of the Dark Ages, perhaps Christianity as we understand it today isn't relevant for the new Dark Age of the West that it has helped usher in.
Read “Fire in the Minds of Men” for a start.