There are religious and philosophical systems that promise to provide a road map for life or serve as a place of refuge and support in times of trouble.
The problem is that any conceptual explanation of life or phenomena that cannot be proven in one's own experience requires a leap of faith into belief.
Coming to believe in anything, in the absence of evidence you can know to be true, is like floating along, feet off the ground, holding onto a balloon full of hot air.
Beliefs tend to go pop. What then?