Jackdaw,yea I hear you.... but that's the difference between someone tinkering with their own house, and someone who gets paid to do it. Like most tradesmen, they have come up with best practices to allow for efficient building. Different from how you or I would do it.
I am a professional trades person. I have worked cabinet making and carpentry in New Hampshire, Boston, Winston-Salem NC, both coasts of Florida, and I can tell you that most professionals go for a "good enough" approach. Efficiency means different things to different people. For some, efficient is doing it fast, for others it is doing it cheap, still others want high resale while beauty is often overlooked as a measure of efficiency, but is what customers want too. I wanted no space for bugs and rodents to nest. At the time, that was what efficient meant to me. It is never just a closet or just a garage, if the customer can ever see it.
- Will (Dragonfly)