It was refreshing for me to 'lose' my faith. It was holding me back and I was afraid. Now I don't worry about such things and live in the present rather than worrying about whether there is a heaven and/or hell.
Before, I was concerned that if my abuser asked his God for forgiveness then he would be in Heaven for all eternity. Along with any other repenters, but also with us innocent victims. The idea of being together forever absolutely horrified me. I was a believer, went to church of my own accord and even became a Sunday School teacher as a teenager. But with hindsight I think I was reaching out to find a meaning in my abused life.
Now I believe that when we die, that is it. I feel much more content with that option.
Additionally, I have read a lot of scientific work that dispel religions of all types as myths. I am a logical sort of person that likes to have proof in all aspects rather than simply needing to believe. I have a factual brain and atheism sits well with me.