Stopped attending the day I moved out of my parents house at 18, resigned at 25 because my parents kept giving out my address and phone number to strangers that would show up at my house looking for me (I kept telling them I didn't live there, but it didn't stop them)
BIC, primary/seminary grad, RM, temple married. I managed to not get any callings above the clerking category. Long hair, facial hair, and shirts of color will do that. So, I was somewhat on the periphery and never really "in it" post-mission. I was around 40 years old when an unwise bishop (who believed his own press, methinks) forced me choose. I still remember the look on his face when I walked out.
I started skipping meetings at age six, announced my agnosticism at age 12, put my foot down at 14. Of course my father beat me, but I was getting beaten when I attended, so what the fug?
Stopped going after I left home and got married at 19. Went to church on and off a few months due to pressure from neighbors. Resigned at 28. Going to college was what started me out actually. When I learned how to think for myself, I saw the church for a fraud without even really hearing about the history and everything else.