What's spirituality? [What, and whose, is it?]

Despite my excitement eight days ago upon "[realizing] that spirituality might be all (or at any rate mainly) about keeping oneself in good spirits," I soon saw that that was crap. There are lots of ways we humans try to keep ourselves in good spirits, and most of them aren't spiritual. For example, there's drinking, having sex, partying, watching feel-good movies....Often our motive seems to be to keep from thinking about weightier matters. And some of those weightier matters are precisely the ones we need to deal with in order to tend to our spirituality.
    An easy and revealing research project is to google on "what is spirituality" and read a few answers¹ to be found on the Internet. They vary all over the lot. Some mention transcendence and divinity; others do not. Most seem to address the question, Who am I? or Why am I here? We can think of these as the Gauguin questions; his perhaps most famous painting was titled "Where Do We Come From? What Are We? Where Are We Going?"

    Wikipedia conveniently lays out spirituality's traditional dimensions:

Spirituality can refer to an ultimate reality or transcendent dimension of the world; an inner path enabling a person to discover the essence of his or her being, or the “deepest values and meanings by which people live.”
    ...Spirituality is often experienced as a source of inspiration or orientation in life. It can encompass belief in immaterial realities and/or experiences of the immanent or transcendent nature of the world.

The Wikipedia article also lists some spiritual practices:

Spiritual practices, including meditation, prayer and contemplation, are intended to develop an individual's inner life; such practices often lead to an experience of connectedness with a larger reality>: a more comprehensive self; other individuals or the human community; nature or the cosmos; and/or the divine realm.

A cogent statement of spirituality has to address the transcendence/divinity question, if only to deny it as based on a delusion (or to restate transcendence in terms of the evolved human desire for more). Three months ago, I defined "God" as the main true thing. To me then and now, the main true thing is that our marvelous consciousness is a product of billions of years of the blind play of material forces that on Earth developed into Mother Nature. For me, that is, the traditional "God" doesn't exist.
    My answers to the Gauguin questions would have to reflect that life revolves around God-emptiness and address how in that situation we can keep our spirits up and remain reverent for life, compassionate toward other humans and critters generally, morally good, and so on. My "good spirits" post of last week was hardly more than an affirmation that I am not cast down at being the product of blind natural forces, but am yet moral, compassionate, and grateful, though still seeking a story by which to exult in this reality as others have exulted in such dreams as that they were specially chosen creatures in some divine drama.
    Like profoundly devout Jews, Christians, and Muslims, I tend to think sub specie aeternitatis, under the aspect of eternity, or from the perspective of the eternal. In fact, that perspective seems to be implicit in spirituality. What are we, in the most comprehensive sense?

March 11. Apropos the new story I am seeking by which to exult in the reality revealed to us by Charles Darwin, I was reminded today (by Daniel Dennett in his book that I'm reading) of something the physicist Richard Feynman wrote (and published in his 1988 memoir, What Do YOU Care What Other People Think?):

Is no one inspired by our present picture of the universe? This value of science remains unsung by singers: you are reduced to hearing not a song or poem, but an evening lecture about it. This is not yet a scientific age.
    Perhaps one of the reasons for this silence is that you have to know how to read the music. For instance, the scientific article may say, "The radioactive phosphorus content of the cerebrum of the rat decreases to one-half in a period of two weeks." Now, what does that mean?
    It means that phosphorus that is in the brain of a rat—and also in mine, and yours—is not the same phosphorus as it was two weeks ago. It means the atoms that are in the brain are being replaced: the ones that were there before have gone away.
    So what is this mind of ours: what are these atoms with consciousness? Last week's potatoes! They now can remember what was going on in my mind a year ago—a mind which has long ago been replaced.
    To note that the thing I call my individuality is only a pattern or dance, that is what it means when one discovers how long it takes for the atoms of the brain to be replaced by other atoms. The atoms come into my brain, dance a dance, and then go out—there are always new atoms, but always doing the same dance, remembering what the dance was yesterday. [p. 244, quoted by Dennett on p. 360 of Darwin's Dangerous Idea]

    A story by which to exult is precisely a dance!
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1. For example:
   What is spirituality?
   What is spirituality (II)
   Five (no so) easy steps to happiness
   Spiritual awareness