Spirituality is related to the idea of spirits, non physical and incorruptible, God is a spirit. Is nature a spirit? I think not, when our senses can be stimulated by a presence that is incorporeal, a spirit, then and only then you are in a spiritual experience, that is what the Bible teaches. Joh 4:23 But the hour is coming, and now is, when the true worshipers shall worship the Father in spirit and truth, for the Father seeks such to worship Him.
Then what's the point? The point is to worship God in the spiritual realm even in this earth. In this temporary stage of existence, that is not eternal and corruptible, all that is physical is corruptible, in fact nature it self is decaying/dying at this very moment, this is not so in the Kingdom of God, it is eternal and it characteristics indescribable in human terms, thus the need for allegories to explain it.
People this is universal truth, nature is physical therefore is temporal, matter decays and dies God is spirit.