In the case of religion I must be one of the exceptions - my parents aren't particularly religious though they forced me to go to the Hindu temple with them once a week when I was a child so that I would not lose my culture and heritage. When I became a teen I found the notion of gods implausible and religion seemed stupid so I told them I was an atheist and therefore refused to go to the temple. They left the country when I was 18, and a few years later I started believing in god and became a Muslim about a year after that.
Not sure you are an exception Gabriella - although you have clearly shifted from the religion of your upbringing to a different religion as an adult. But that is a religious to religion shift, not non religious to religious, which is the thing which is very rare.
Now I've had a similar discussion with Vlad, who claimed to have been brought up in a non religious household yet was sent to Sunday School. I think this misunderstands what a non religious household and non religious upbringing means. Let's not forget that only about 10% of people in the UK (probably far less than that) participate in organised religious activities on any kind of regular basis, such as going to church, temple, mosque etc (except for weddings, funerals or perhaps once a year at Christmas). So the 90+% is what a non religious household looks like, what a non religious upbringing looks like - you don't go to church, you don't go to the temple, you don't go to Sunday school etc, etc. So regardless of how you perceive your patents religiosity they were clearly in that tiny proportion of activity religious people as they regularly went to the temple and took you - indeed it would appear that they were fairly insistent you go.
So Gabriella - whichever way you look at it, in the contexts of the research you were brought up in a religious household, not a non religious one.
And it isn't uncommon for people to 'rebel' against their upbringing as a teenager. Indeed it is very common. So you will find all sorts of people who claim to have been atheist and then became religious (Vlad is one I think, and you in a slightly less overt manner is another). But the reality is that you, and Vlad were brought up in a actively religious manner (temple, Sunday School), may have spent some time rebelling against that upbringing but largely folded back into it, albeit in your case into a different religion.
But I think moving from one religion to another is very different from genuinely moving from being non religious to being religious. The point being that most, if not all, religions are based around belief in a god, faith, tradition, custom and ceremony. If you are comfortable with that as you were brought up in that manner, then even a different religion will have very familiar elements to it. If, on the other hand you were brought up in a non religious manner those fundamental elements of religion may seems alien, unfamiliar and frankly unfathomable and implausible.