I couldn't believe a benevolent god would put me and so many others through such truly shit childhoods, and allow utter cunts like the bullies in my class to lead such, as I saw it then, charmed lives. ( I accept now they may have had their own ishoos blah di blah but that doesn't make me very sympathetic to them, even now, and I wasn't even one of their main targets).
Then as I got older I just realised I found the WHOLE THING ludicrous - it just didn't, none of it, match up with any common sense at all. So when I was about 11 I just locked myself in the bathroom so they couldn't take me to church, much to the disappointment of my family, and I never went again, other than to the odd funeral or wedding (but I avoid those too if I can).
My mum always said I would go back to religion one day as people do when they are dying. But I almost died more than once and trust me, there was not a single glimmer of a thought of religion.
My dad was an upstanding Christian but was also an utter cunt. My mum was an upstanding Christian, and not a bad person, but her blind, unquestioning devotion to whatever priests would say meant I lost respect for her as a woman.