Me? I'm as nice as the next guy. I'll help people pick up dropped parcels, shovel the elderly neighbor's walk, drop a buck in the donation jar, that sort of thing.
But I'm not that nice: I've never once volunteered in a soup kitchen or spent time hanging out with the grannies in the nursing home -- it takes a very, very special person to give away their time or talent to others. Especially when that talent is highly in demand and can be charged at a premium.