I am an Indian who believed in God and followed Hinduism.
Later, I went to college and became enlightened and ruled out the idea of third party creation or the existence of a creator. That said, during the time I believed in God, when I entered the temples I had a different feeling (I can't explain it, but it felt good) by hearing the chanting of mantras, the glow of lamps, the smoked smell of camphor, etc.
I think this is a spiritual feeling.
As I have lived my childhood as a theist and later as an atheist I can't differentiate if the spiritual feeling is because of childhood memories or is genetically embedded.
I ask this question to understand how people like OSHO and thousands of his variants in India could glue millions of followers without giving any material things.