I agree to some extent. Even the new agers seem to agree that we are a trinity: body, soul & spirit. It seems to me that, "Why not God" could just as easily be asked in place of "Why God" when dealing with the trinity issue.
Yep. A special pioneer once espoused to me that Christendom "wants a schizophrenic god". Because how can one person also be three? Oh, hmm... Except that the WTBTS also explains that any anthropomorphic portrayal of God is simply a portrayal for our own understanding and that He is a spirit... So why not a Trinity then?
Seriously, at that point, you're in fairyland anyway. Newtonian physics and conventional logic do not apply. Ain't no rule book about how this works.
... I'm surprising myself here because I know St. Augustine made a similar argument on the Trinity, that we can't just compare physical things to spiritual things. While in the cult, I often decried St. Augustine's writing on the Trinity.