> Money is a really good motivator for people not to quit on the first frustrating experience.

So true. I volunteer in an organisation with many older members, and a few of the older members have a thinly-veiled disdain for the younger people who don't contribute the same time and effort that they do... so some young people just stop turning up because they don't want some retiree with no life judging them for having a job, family commitments etc.