many people do ...
many people do ...
many people would agree with you – because if the "switch side" of the load gets "grounded" somehow (by a chafed wire, etc.) then the load would be energized ...
but ...
in DC sensor circuits, finding the "switch" (the sensor) on the 0v side of the load is a very common occurrence ... for better or for worse, many DC sensor circuits are wired that way ...
I'm losing you on that one ... when we talk about NPN and PNP we're NOT talking about wall receptacles, etc. ... the posts that I linked to are ONLY concerned with DC circuits (like sensors and photo eyes) – NOT with AC wall receptacles, etc. ...