I feel it's possible to hold on to your Christianity while also moving to other levels of spirituality. Recommend reading Ken Wilbur's "A Theory of Everything", Spiral Dynamics, and other similar concepts. Another great book I just discovered and read recently is Social Singularity by Max Borders, it combines the spiral ideas with crypto world as an alternate view of the dystopian "Singularity" many espouse.
Let's not forget that Christianity set an excellent moral foundation, local community gathering, helping, and bonding. My own spiritual journey did not come from Christianity, but rather extreme, unhealthy atheism to a feeling of acceptance and appreciation of all beliefs. It's quite liberating