Hi Gel
I would be happy to answer your question honestly and as factually as I can from my perspective. Because I am answering your specific question, I do not want anyone to misconstrue it as debate in any way.
It has been my experience, after talking to many ex-Catholics, that when we talk about the Catholic faith, their understanding of the Catholic faith does not match up with the teaching of the Catholic Church in some fashion . . this is been my experience 100% of the time . . that does not mean that this is accross the board in all areas of the Catholic faith.
In speaking with other Catholics who talk to ex-Catholics, this has been their experience as well.
It is well known that catechesis last century, especially the later half, was quite poor in its content . . . people were able to excel in their catechetical classes, yet come out not understanding their Catholic faith very well.
This is all in answer to your very specific quesiton, not to debate anything anyone has said here . .just to help you understand better as you requested that I do.
It would be interesting to discuss this in more depth with any catholics and ex-catholics who would wish to at some future date.
I am very open to having someone demonstrate to me that my experience is skewed and not the norm.
Peace