If someone had raised me in a Christian faith where the goal of life wasn't to keep out of hell but to live in a thoughtful, responsible, peace-loving, "option for the poor" kind of a way and had founded those ideals on the teachings of Christ and had then suggested that this way of life is sourced in God, I might have held onto God more easily.
If I had been told that the Bible is written by people like me attempting within their contexts to identify that thread of spirituality we like to call God through their direct experiences, their imaginations and their cosmologies, I would have held the Bible with a more open hand.
If the church had been peopled and run by a variety of personalities, genders, races and education levels, I might have imagined that Paul's words "There is neither Jew nor Greek... male nor female..." were true and worthy of my own devotion in how I treat others.
If Christians had been on the cutting edge of caring about science, history, and archeology because they knew that their beliefs could be modified or enhanced by further developments, I would have happily stayed on.
Graduate school was the first place I ever encountered this kind of faith. Understandably, I miss it.