Pistoff, that is a great point, and you cut to the chase way better then I did.
A study of the Trinity in the realm of theological Christianity alone is actually disingenuous, and ignores (dare I say it) the rest of the world.
I understand that the Trinity, like Theology, is most comfortable for a believing Christian when amongst fellow believers. As I recall, I felt the most comfortable about JW theology when I was around fellow head nodders. My least comfortable times? Talking to someone at the doorwho was read up on me and had some points to make. Made me think. Expanded my world view.
There is a difference between being getting knowledge and receiving a real education. Many people are well read, and would kick any theologians ass in their understanding and arguments of religious subjects and theology. They have not limited themselves to one point of view.
The history of the Trinity, like many other Christian/Catholic theologies and subjects, can be very enlightening. However, at the end of the day, they provide only one glimpse, one side of a multifaceted story.
It certainly doesn't explain god. As a planet, we are moving away from a one size fits all view of god. Like it or not. And by the way, you can be a Trinitarian if that is good for you and what you need.
But don't sit there and pretend or imply that it is THE way.
If you can't explain it outside of your little club, it's probably best to stay in your little club.