[akdor1154]

I think the observation is great but the implication of causality is the wrong way around..

People who get enjoyment from their programming job will like to Do Extra as they probably also get enjoyment from new tech, extending themselves, etc etc.

People who don't get enjoyment from their programming job won't get enjoyment from Doing Extra, so they won't naturally do it.

Telling one of the latter to Do Extra probably won't turn them into someone who gets enjoyment from a programming job.