Very interesting thoughts. May I offer some of my own that came after reading what you said? Well I’m going to…
I’m not 100 percent sure why this is, but I can say that post modernity has had some impact. Denominational loyality is not there as much anymore. I saw it more from my parents generation who were "Born Baptist and will die Baptist (or Methodist etc…). I myself have hopped around and not thought twice about it.
LOL when I took my sister to my parish she said “it looks like a nursing home”. Admittedly, there are only a few children and youth, but we are a small and growing parish, 70 or so members. There are about ten of us 20-30 somethings in our parish, and I am one of them. However, I have noticed that this is a problem thoughout American churches, except for Evangelicalism. I really think that in 25-50 years, the US will be like Europe is now in our church going habits. People no longer go to church just because its a socially acceptable thing to do.
I understand what you are saying, but in some ways I feel thats an unfair characterization of many of these groups. In the A/G churches I was a part of for years, we received relevent but challenging messages that were Bible based. They were deep in the scriptures. Many of these “Community Churches” are affiated with larger groups when one looks at them-denominations so to speak, but not necessarily the historical ones. I know in seminary we studied Calvin, Luther, Wesley, Augustine, Aquinas etc…and that was at a Pentecostal Seminary. They very much cared about theology.
I’m not sure how to put this: God is going to work through whatever people and institutions will yield themselves to him and his will. Why are the Evangelical churches so healthy? They preach the word of God, and apply it practically to peoples lives. The Holy Spirit is moving among them. If Catholics would be honest about it, the reason the CC continues to grow here in the USA or remain steady is the influx of Latinos. Why do you think the CC has such a liberal position on immigration? Amoung native born Americans, the CC is losing numbers fast-at least amoug those who practice their faith and attend Mass regularly-some studies say at the rate of almost a 10 percent a year loss.