A sacred space carries with it spiritual power. Have you ever visited a place that just felt more divine to you? Perhaps when you were there you found yourself speaking in a whisper without realizing it. Maybe you felt inclined to kneel, or to turn your eyes to the sky. A sacred space is a powerful tool for developing spirituality.
People are less religious now than they used to be. One Pew Research survey showed that in 2017, the percentage of people in the U.S. who said they were not religious was 24%, a value that had tripled the percentage from only 25 years previously.