Our spirit is not dependent on the brain or body. It is eternal, and no one has one sentence worth of hard evidence that it isn't.
In our tabulation of psychoanalytic results, we have classed those who stopped treatment together with those not improved. This appears to be reasonable; a patient who fails to finish his treatment, and is not improved, is surely a therapeutic failure.
The timing of death, like the ending of a story, gives a changed meaning to what preceded it.