The feel thing gets passed down because nobody wants to admit they dont actually know the spec. Guy training you says "just snug it up" and you figure thats gospel, then you teach the next guy the same vague nonsense. Then a bolt backs out on a pump flange at 2am and suddenly everyone cares about a torque wrench. I keep a little laminated card in my box with the numbers on it for the stuff we touch most, takes two seconds to check and saves a whole lot of grief.