Christianity isn't based on a a phylosophy of life. Good morals and ethics were debated upon before jesus time. Christianity cannot be based on a belief of jesus being a seeker of truth. Christian believe is the convection that jesus died on the cross and payed for our sins and raised himself from the dead. As a christian..the trinity is a position that a truth.
Beg your pardon, but you have a pretty narrow definition of Christianity. You're free to your own convictions of what makes a "real Christian" of course, but I'd recognize that both scholars and many Christians are not going to agree with how you're painting the religion. They disagree that mythological literalism is required. If it was, I'd wager at least half of people who identify as Christian in the world would suddenly not be "real Christians" according to you.