Please pardon my bringing Christianity into the American equation, but Jesus said that the foundation of the church was the understanding that he is the Messiah. And the gates of hell will never be able to overwhelm a church that is based on that foundation. As long as the church is in America, America will always come out on top.
The wake up call is what we're getting now. Political apathy is inexcusable after 9/11. The reelection of George Bush is evidence that Christians are getting involved and returning to their foundation. Remember, freedom to worship Jesus Christ is an integral root of America's beginning. And America has been for it's history the biggest preacher of the gospel and sender of help to hurting nations. The more the devil shows his face through abortion and homosexuality, the more Christians will respond and take things back.
It should be noted that the church was in the Western Roman Empire, the Byzantine Empire, the Kingdom of Armenia, the Visigothic Kingdom of Spain, the Crusader States, the Austro-Hungarian Empire, etc., and these didn't last or "come out on top".
As much as I would like to believe you, that is not entirely true. The cultural aspects, like an overwhelming devout Christian population, around the time of our independence was the the reason we are Christian today. Our founding forefathers (at least the famous ones we are more familiar with) did hold most of the morals that went into the framework of their new country. However, you must realize that they were also _enlightenment_thinkers_. Their love for democracy sprung from this. The original enlightenment thinkers, as well as the flavor our founders adopted, had somewhat of a distrust for religion. They may not have resisted the teachings of the Bible and Jesus Christ, but they DID see harm in adopting any belief whatsoever without first questioning it.
Also notable is the fact that our founders saw (and vividly remember) what may arise if our government makes too much of a commitment with one. I know you all know the story about the puritains being persecuted. The reason was that the government of England adopted _the_church_of_England_ (which actually had a real tendency to radically shift when a King or Queen's term ended). Remember "Bloody Mary"? As much as I would like to use that power, so would everyone else...even people I fundamentally disagree with. I, like our founding forefathers, do not want to risk that. That sort of power has the ability to turn nasty. It is also a source of shearing strife and turmoil.
Our founding forefathers knew that there is always change. They wanted our country to be nimble enough to adapt, yet still have a strong, stable foundation. This is why they made it exceptionally hard to change our foundation, the Constitution. As conservatives, we all should admire that. This unique blend of stability and nimble-ness is exactly why we have already accomplished, are presently, and will always prevail!
Having a personal relationship with Jesus Christ is indescribably more important than petty human politics.