Yes, I do have a personal, private concept of 'spirituality' and experience it as 'real'.
I do think of myself as a spiritual being, but not in any sense that distinguishes me from any other being in the universe.
One observes that bodies decompose after death. What happens to me after death is of no consequence whatever. My death will not subtract one iota from ***.

"Time is what prevents everything from happening at once" - John Wheeler