A lot of people have left "god" because they have been told a myriad of lies about the Most High God, and they don't have the emotional/psychological/spiritual energy to begin the process again even if they were sure they could learn the Truth about the Most High God.
In other words, other humans and their lies - from the top of institutions to the bottom of the gutter - keep and pull people from the Most High God. It is very unfortunate to hear some of the reasoning and stories of some of the members who chose to leave [the idea of the Most High] God, and in many ways I do not judge or blame them. The world is full of lies we justify in different degrees of acceptance; we ignore how those lies affect us on the whole (e.g. the "white" lie of santa).
I almost left my Father until I went through some things and began to understand all of this at the most basic level (I still don't really know anything, but I know enough to continue). Finding the Most High God usually means forgetting everything you think you know, and abandoning all forms of "religion" you think are appropriate. God is not an institution, or an academic concept that can be taught or learned. He is God; you need to relate to Him... which means going through "stuff" with Him just like a real family - and trusting Him just like you would a Father.
That is asking a lot when the world (even parents) have lied about something so fundamental as the Most High God - to rebuild that relationship. But, if you believe it is worth it, you should take the risk - with the insight of what the world and humans are actually like. Don't be naive to the totality of human depravity and manipulation, especially when it means a gain in money or power.