If they will not use my free software because of the expectation that they contribute back even a little, then they are not users I want anyway, so who cares?

If they will not use my free software because of the expectation that they contribute back even a little, then they are not users I want anyway, so who cares? I find the entitlement complex that some software developers have over other peoples' software to be bizarre. "How dare you offer this free software under terms that don't allow me to exploit your labor commercially without the slightest contribution!" is a real thing that real people say every goddamn time you dare release anything not MIT/BSD licensed.