The message of the OP smacks of forced servitude. No one should be punished or rebuked or even criticized for giving the terms on which they will do anything. The fact that donating time to develop software for others can be used as a guilt-club to try to force one to continue the effort frankly makes me want to not donate another second of time ever again. I know that isn't exactly what you were driving at but it's what comes out of it.

Corion's attitude and remarks are exactly right in my mind. Giving something should not make one a slave to the service of that gift. We should instead evaluate it, appreciate it if its something we judge good, and leave it at that. Otherwise it all feels like a bad personal relationship with the implied bullying and childish emotional blackmail.