Yes I must admit that the more you look at it (Chistian's call it the trinity) the stranger it seems and the less evidence you find that Christians actually have for it.
It's a case of having you cake and eating it. Christians want to follow Jesus as divine but at the same time want to be a monotheistic faith.
So we get the idea that Jesus is somehow "part of God" (they say "Son of" but obviously that's not the same sort of son that we're familiiar with.)
It all gets even more contrived with Easter wher you end up with a part of God (Jesus) expressed as a man being crucified to same mankind from the other part of God.
I think Christians effectively "partition" their notion of Jesus and on a daily basis think of "him" as a seperate entity - but at the back of their mind keep the notion that there's only one God.
Still you can always join the unitarians
http://www.bbc.co.uk/religion/religions/unitar ianism/