I recall a cartoon showing the usual cartoon evolutionary "progression" from amoeba, fishy thing, crawling out on land amphibious thing, mammal, ape, human, each with a little thought bubble. The amoeba's was empty; everything else was thinking "Eat! Survive! Reproduce!" except for the human, who was thinking:
"What's it all about?"
I don't see the point of spirituality, personally. Unless you mean fulfilment, and then why not say fulfilment. Or fulfillment, whichever looks more right to you.