what are all those Christians doing in the USA?

According to one source, which easily accords with many other reports on the number of Christians in the US, there were around 159,030,000 Christians in the USA in 2001 out of a population of 224,437,959. We consistently hear about full churches in the country and the involvement of young people in various church-based activities. My personal experience tends, in a small way, to confirm this crucial distinction between the US and Europe, where the number of practising Christians has declined massively since the war.

The trouble is, I can't fathom what this vast quantity of Christian observance is achieving. I assume that in one way or another Christian teaching is broadly based on the teachings of Jesus as reported in the Bible, which, unless they've changed recently, tend to be pretty down on the acquisition of wealth and the waging of war. Given that America has budgeted on what is virtually a war footing since the war (in spite of having some of the safest boarders in the world), has waged several wars, and its people devote much of their time and energy to the acquisition of wealth way beyond what is required for comfortable survival, what are all these millions of Christians doing?

President Bush is one of them. What aspects of his conduct can be described as Christian? Does he respect life? Has he encouraged his country in the ways of peace? Has he helped the poor, preferably at the expense of the rich? What sort of religion is this?