Atheists: what is "spirituality"?

[Alan V]

The definition is fuzzy because the concept is fuzzy, and the concept is fuzzy because the things it's trying to describe are not valued or encouraged in our society.

A subjective sense of belonging in the universe, and a feeling of solidarity with other living things, cannot be quantified, packaged for sale, or weaponized. But it can be easily mocked, by portraying spiritual people as unserious and a bit loony. 

But feelings really exist, and how people feel is important. So the fact that the word is weak is a sign that some important things are also weak.

Per Wikipedia:

Spirituality is the quality of being attached to or concerned with religious questions and values broadly conceived, although the term is loosely defined, and may mean different things in different contexts. Traditionally, spirituality referred to a religious process of re-formation which "aims to recover the original shape of man", oriented at "the image of God" as exemplified by the founders and sacred texts of the religions of the world. The term was used within early Christianity to refer to a life oriented toward the Holy Spirit and broadened during the Late Middle Ages to include mental aspects of life.

In modern times, the term both spread to other religious traditions and broadened to refer to a wider range of experiences, including a range of esoteric and religious traditions. Modern usages tend to refer to a subjective experience of a sacred dimension, and the "deepest values and meanings by which people live", often in a context separate from organized religious institutions. This may involve belief in a supernatural realm beyond the ordinarily observable world, personal growth, a quest for an ultimate or sacred meaning, religious experience, or an encounter with one's own "inner dimension" or spirit.

Some spiritual people are "unserious and a bit loony," whether they are mocked for it or not. That is likely because the idea of spirituality is so poorly defined that they try all sorts of things.

And of course we are a part of our ecological systems, whether we understand that or not. We don't have to seek it, just to acknowledge it and to do something about it.

"How people feel is important." I will have to work on that one for obvious reasons. As I admitted, I seem to lack ordinary emotional intelligence.