I guess I call myself Christian more as a legacy now and for my family. But one of the biggest reasons for me sliding away from my faith is that there is absolutly no way to differentiate between the God of the Jews and any other pagan deity.
1. Take any action that God does in the Bible.
2. Explain how that is better/different than something that one of the Greco/Romean pantheon of Gods would do.
The 2nd biggest question for me doesn't seem to fit into your criteria of minimal research. The ad-hoc editing, combining, collecting, and destruction of scripture means that the true textual revelation touted by Christians as authority for their beliefs does not actually exist.
If a nation expects to be ignorant and free, in a state of civilization, it expects what never was and never will be. --Thomas Jefferson