You know I came to be an agnostic by doing the same thing you did, but perhaps I did a better job (sorry, my "pride" is showing), because I wans't looking for something out of a need to find it, but out of a quest to get to the bottom of things I didn't understand. Funny how motivation leads people to different destinations.
For one, first I discovered that disciplines such as what is "proper" fasting were invented by bishops, and not God, and then I discovered that the Bible is not the pristine edition made in heaven; then I discovered that Christians can't figure out which books constitute the Bible, and that even those who can agree (more or less) on what is the Bible can't agree what the Bible says, and are ready to kill each other (literally) over it, etc.
Likely story totally based on your "motivations", as you said.
However, it doesn't leave you off the hook.
The basic claims of Christianity are still there, canon or no canon.
So far, all you have complained about are what PEOPLE have done. No mention of what God has done and what people were unable to mess up. What will you do with Jesus? Who do you say he is? A lot more will fall into place once you resolve these two questions.