I nor any of my oppos ever think as we are strapping in... "I wonder who is responsible for the airworthiness of this aircraft"....
Some would say it is the job of those responsible for airworthiness NOT to put you in the position of having to consciously think of it as you fly; as that would constitute a distraction and human factors hazard (in the same way the Mull crew were demonstrably distracted by their concern over the immaturity of their aircraft, evidenced by their request for a Mk1).
But you clearly do give a hoot, as you want to know your aircraft is serviceable, one component of airworthiness.