1. What prompted you to make such a drastic change and how old were you?
It just happened, i was raise as a christian and found myself questioning the logic behind the religion. When the priest told me to just have fate, i found that answer inadequate and slowly i lost interest.
2. Do you think that if your faith had been presented in a different manner by your family or your church/synagogue/political system/science/etc it would have prevented you from choosing to leave? If you didn't buy it yourself, why do you think it didn't "take"? Was how you were treated a factor?
Nothing of that type, I believe i would have divert fromt he belief regardless of their mannerism. I just happen to think everything has a cause and effect. Some things happen randomly, but there is a cause for it. Of course i would except "god made it happen" as a plausible explanation when his existance can also be explained/seen/heard.
3. How do you feel about it now? Are there any regrets? What have you gained?
I feel indifferent, being fateless leaves you in an uninteresting spot. The ability to ask comfort during hardship, ask reassurance when in a tight spot is very powerful. As the feeling of guidance can give you confidence to accomplish and overcome conflicts.
4. How did it affect your relationship to your family and also impact the social circle you had?
My mother is one would consider a religious fanatic. But she prays for me and leave me be of my belief. My brother and sisters does not care.
5. Has anything replaced your old faith?
Reason and logic,
the above two didn't replace my faith, but my thought works by believing in things that can be explained, and theorizing (using above method) what can't be explained.
If this is too broad, you are free to only answer one or two points.