Naomi...happy to oblige !
I was born in 1953, to a Northern Irish Catholic father and a English Catholic mother. I went to a Catholic Primary School, in North London. I was taught by a series of Nuns, Friars and ordinary teachers, and was brought up to believe that everybody that was Christian but not Catholic were, by default, Protestants. ( which I suppose is literally true ) As my father came from Belfast, there were no shades of grey about religion in our household...he was just as bigoted in his own way, as Paisley and other Protestants were. As we lived in England, I grew up with many non-Catholic friends, but if I and my brothers had been living in my dad's old village, it is unlikely that I would have known any Protestants, let alone been friends with them.
I was a good little Catholic boy, learned my Catechism and made my First Holy Communion at age 7 and was Confirmed aged 8. The whole family went to Mass every Sunday, without fail. Our family life revolved around the local Church. All in all, I have nothing to complain about all this....my childhood was happy and secure. Nothing "untoward" ever happened to me with a Priest, nor did I ever hear of anything happen to anyone else. The Clergy, especially the Franciscan Friars showed me nothing but kindness.
But when I was about 15 or 16, I started to question the central ethos of religion. Not unusual to be rebellious at that age of course, but I became more and more disillusioned with all that I had been taught. I realised that all religion depended on the irrational belief in illogical circumstances. I wasn't able to suspend my disbelief any longer and have been a committed Atheist ever since.
To put it bluntly, I now see that religion is just the same as the belief in fairies, goblins, witches and the Tooth Fairy. Some people may describe what happened to me was that I lost my faith, but I prefer to call it "coming to my senses" after a childhood's indoctrination.
I am not sure if all the above answers your question !