I was raised in a Non-denominational Christian home. ( given the posts by many others in this thread, thank God it wasn't Catholic)
Anyway, in my teens, I became disgusted by the actions of so-called "Christians" and began to question God. I studied other religions, and was impressed by some of them, namely Buddism. But, I never progressed to the point of believing in Buddism or any other religion. I looked into the possibility that Science ( Evolution) could provide the alternative to religion that I was searching for. Being a person of logic, I quickly realized that human existence without a creator or designer was severly flawed, and impossible. Science was not the answer, Other religions weren't the answer, so, I once again looked into my family's religion.
I couldn't understand WHY God could allow the things he did, and HOW the supposed "Christians" of the church I attended could be so downright disgusting.
I questioned God, and after coming to the logical conclusion that he must exist, I had to find the answer to my questions about the "Christians" and the evils of the world that happen on a daily basis.
After talking with Christians and non-Christians alike, I realized that the bad events of this world aren't God's doing. That evil happens without design or prompting by God, ultimately being the result of the free-will concept so vitally important to the relationship that God wants with human beings.
My concerns over the hypocritical and disgusting actions of Christians have only recently been resolved. The idea that someone who is a Christian, would actually live up to the philosophy and message of Jesus is impossible. Instead, realizing that Christians are flawed, damaged, and disjointed like ALL humans are, has given me a tolerance for being around Christians.
Now that I am older and a little wiser, I realize that as a teen, I was expecting the impossible from God, as if somehow, God owed me something. I still have questions about things, religious and natural, but my belief in Jesus is now firm. No other concept has answered so many of my questions, so perfectly.