[Suan]

This plus moxie's comment (currently top) really sum it up nicely. Unless I get on the order of $500 or more for it a month, I won't stop seeing something as a side project or hobby. I certainly don't want the support responsibilities that come along with paid products.

Knowing that you've solved an unsolved problem in some niche, putting it out there, and seeing others voluntarily use it is far more gratifying than whatever small sum of income such a scheme might net you. This applies even more when those others start helping contributing back.