petallus, I like your list, and indeed the idea of a list of positives. However, I would 'take issue' (in the spirit of discussion) with the idea that christianity actually generated wonderful music. I'm thinking of people like JS Bach and Handel: they produced exceptionally wonderful music for the church, outstandingly beautiful music. However, the church was one of the very few patrons of music at the time, and that's why the music they produced was often for the church. Nowadays, should such composers happen again (if only!), their patrons/sponsors would be far less likely to be associated with a church, and so the music, which would be just as good, would not be called church music and its inspiration would not be ascribed to christianity. People as talented as those two in my example would produce exceptional music for whoever paid them.
That said, at least the church had the funds to pay such talented people, for which we can be thankful. The aristocracy was the other main patron of the arts. So really, cutting to the quick, it depends where the money is 
In short, I don't think Bach's most esoteric music was inspired by christianity; I think he was just a genius. His music is often mathematical (e.g Art of Fugue, Goldberg Variations, many cantatas), so ultimately I think the numeric quality of sound is what inspired his amazing brain.
I would say that though, wouldn't I, preferring a scientific explanantion for everything? 