And its users. Unless you're the one living in the house (in which case I agree, do whatever you want) there has to be a certain guaranteed safety so the roof doesn't fall down on its tenants. I don't want to be a civil engineering expert to choose the place where I live; I expect the plumbing to work and the electricity to be safe. Likewise, a software user shouldn't have to be an expert in order to get safe software.
Most commercial software products aren't pieces of art, they are pieces of engineering like cars and bridges, and should behave as such
(Of course, there is software that is more akin to pieces of art; videogames come to mind. Even then, they shouldn't compromise the privacy of unsuspecting users)