I consider having a religiosity mean that you having a unique experience. It can enrich your thoughts, affections and culture.
However, this rich culture is based on belief in God. If you don’t believe in God, you better find other culture’s resources.
Passing the same experience of someone, it keeps you and him in sympathy, I mean you’ll have good understanding towards each other, and compassion or love. This mutual affections should spread to each person have a deep similar experience, however, if love just reach religious ones it would turn to be sectarianism.