You came to understand something that many people never get over: blaming God for pain caused by people and their organizations. Recognizing this and getting to where you can forgive the offenders is the road to healing.
You would not believe the amounts of error Christian churchs teach. I was once sitting at a Anglican Bible study and heard the minister wish bad things to happen to all non believers, in my opinion that is a curse and make us no different to the JW's. I do believe however that their doctrine as the church elders write it down is correct. God has lead me all over that place, I joined the Methodists and found fault in their ideas (Prayer books) I joined the Anglicans and they don?t believe in healing, and the gifts of the spirit, healing ect. I finally have joined a church that I think I can call home, but even then I find error. This though as God keeps telling me is not caused by God but by human error.
After saying this I am not grouping JW's and other denominations in the same category, as churchs I attend are with fault but they believe in the fundamentals of Christianity, where as the JW's are a deliberate twisted version of what Christianity is all about.