This is a topic that comes up frequently on the forum, and I also notice its influence in the attitudes and reactions that many have to different issues. I myself have noticed several people around me that have changed the faith they grew up in, but don't seem to completely be able to go on happily. I am trying to sort out why this is. Certainly, your world view floods through every aspect of life from moral decisions, to career choices, familial relationship, beliefs and attitudes about your origins, the way you live from day to day and the attitudes you have towards other people and yourself.
Rather than derailing by getting into the details of the problems you had with your specific former faith, these are the things I am curious to know:
1. What prompted you to make such a drastic change and how old were you?
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?
3. How do you feel about it now? Are there any regrets? What have you gained?
4. How did it affect your relationship to your family and also impact the social circle you had?
5. Has anything replaced your old faith?
If this is too broad, you are free to only answer one or two points.