4-5, is changes over time.
I was raised as catholic, and for a short time I was 1.
I started having serious doubts around age 10, at age 13 I simply could believe it anymore.
One sunday, when my parents were preparing for going to the church, I "came out" and told my mother I didn't want to attend mass, as I as I did not believe in god.
I remenber clearly it's face, expressing a mix of deception, fear, angst... I regret doing that, because it was not necessary. My parents forced me to continue attending mass, but over the years my brothers started searching excuses to avoid sunday's masses. Slowly, my parents had to acknowledge no one of us (seven brothers) was going to be a practisin christian.
I still attend mass ocasionally for funerals, weddings, etc...I don't know what my mothers thinks about my religious views, or my brothers ones. I think she prefer to ignore it...
BTW, my grandfather does not know about our disbelief. We do our best to keep him ignoring our opinions; he would probably be utterly disgusted, and it would be bad for his health. With 96 years over his back, I think myself doing some imposture is ok...