Awesome thread, lots of great points. If I may add my own observations from years of personal experience.
Its not a failure point. It is a situation that exists and the situation is this:
Most (not all) church players are bedroom pickers. They have never played in a bar and they never will. They put minimal time into their craft and minimal $ into their equipment. They couldnt sell themselves to the worst local dive for minimum $. So they play at church. To a CAPTIVE AUDIENCE. Literally. The politics of church dont allow ppl to be brutally honest with each other OR themselves. So half-ass musicianship, ego driven (yet talentless) music leadership is tolerated and allowed.
Tell me just ONE good reason why a leader would have mediocre players learn 5 songs in a specific key and then change 3 of them at the last second before they play live.
They say they are there to worship? Sorry, but I dont believe it. They are feeding their egos in the only venue that will tolerate their lack of musicianship, their inability to work as a team member, their unwillingness to practice on their own.
Like someone said earlier in the thread, when they (the poster) try to give honest help, advice, or constructive critism, they are met with hostility.
Why?
Because their ego cant take it, the desire for self-improvement is not there, and the ability/desire to co-operate is not there.
Yet, they say their whole reason for being there is "for God"....
Horse Hockey.
I am not trying to be uber negative/anti church/anti God here...........every statement I made was something I have seen with my own eyes and experienced personally. Every post made in this thread: I have experienced personally.
I agree with the op's first post about ALL of the great things that can be learned in the p&w world. I have learned so much, i am eternally greatful. And I am grateful for EVERY MINUTE I have ever had the privilege to play at church.
I love church. I love Jesus. It's the Christians that are killing me.
I agree to a certain degree. Most of the church musicians I've played have played for popular secular bands, recording artists, mega chruches, records, etc....Even me only being a bassist for three years now, I've won competitions with my bass, been asked to sit in at jazz clubs, asked to start a secular band but it really depends on the musician's skills.
I think that some musicians get to a certain level where they are good and don't push to excel. Today, my church was a featured guest church and the home church's keyboardist was transposing every song. She was good but I wondered if she were on a piano would she be able to play in all of those keys? I have a cousin who is a monster on the board in the key of "C" but he has to transpose for C# - B.

When I brought up the "we practiced this song in Eb, but we played it in C." I was written off as not being able to catch on, and this is from the more experienced musicians.
The only good thing that comes from changing keys on the fly is that I have to rely on my ear more and improvising like crazy.