I built a more solid foundation for life after discovering spirituality in my mid 30s, but I still do not believe in a God the way religious people do. The existence of a prime mover from which the universe expanded (pretty difficult to refute) doesn't require my worship.
The first few chapters of Alan Watts' "The Way of Zen" opened a completely new world to me outside of rationality which I sorely was ignorant about, and I desperately needed. Having a spiritual perspective from which to view the world is probably the most valuable part of the religious experience. The fantasies people have over the centuries built on top, I really can do without.