Anya - your words resonate with me and ditto, I was brought up a RC, went to a strict convent, not a boarding school, but nevertheless taught by nuns, who even then struck me, bar one, as pretty uncharitable people who didn't embody the spirit of Christianity at all. I have read about Mother Teresa, and some of her very questionable practices, but to be fair we didn't know about all of that then. I'm sure that the nature of the RC religion has changed somewhat given all the scandals uncovered, but at the time I was at school you were expected not to question anything. Reading about the Spanish Inquisition, the Borgias in my teens and then later on coming to terms with the the corrupt nature of the inner workings of the church was my undoing. Although I still consider myself a believer of sorts, once a Catholic some of it stays with you.
Being brought up a strict Catholic 50 or so years ago, is something you would have had to live to understand how it was for many of us, a blind faith was expected, no discussion, no dissent whatsoever. We probably could have done with Richard Dawkins back then. I think those who don't have a religion imposed upon them but hold their religious beliefs having made an "informed choice" possibly their perspective is somewhat different.