Nice bit of insight into what people get out of volunteering, by Michael Lenczner:
"That is the currency with which we "pay" volunteers. By giving them
another bit of a story, of meaning, to add to their lives. (not that
their lives aren't full of meaning and stories already - that would be
impossible. It's just that the "meaning" we have is pretty sought
after). Another disclaimer - I don't hand out this "meaning" to other
volunteers, it is something we create together and give each other."