If I had a popular piece of software out there, once I reached the point of feature completeness (yes, I believe it is possible if you're a reasonable person),

If I had a popular piece of software out there, once I reached the point of feature completeness (yes, I believe it is possible if you're a reasonable person), and stability I would do meaningless updates once every 3 months just to keep people that you're referring to happy and using my product. People aren't smart enough to just "be happy" and content, so you have to trick them into product satisfaction.