This conveniently ignores the fact that people will do it just for the sake of it. Don't always need economic incentives. For instance: I'll try to do it for t

This conveniently ignores the fact that people will do it just for the sake of it. Don't always need economic incentives. For instance: I'll try to do it for the sake of it. Sampling folks around me, a dozen would. It's not that crazy or rare a proposition. Arguably my environment doesn't represent an unbiased share of the population, but it's still a certain amount of people.