My great joy after spending massive amounts of time giving my instruction for free ( not PADI) when I watch them like a hawk it is my blessed relief to dive with my husband whom I also keep a close eye but who. I know also has my back.IMHO, a good instructor NEVER can trun it off. It doesn't mean we're always instructing, but it does mean we're always aware of what's going on and what th epotential calamities might be.
To answer your question, you don't dive for fun. You're always noticing other divers, whether they're with you or not. The instructor mentality is always somewhere in the back of your mind. If it's not, then I might repsectfully suggest you (not you specifically, but "you" generically) turn your instructor card back in and go back to being a non-professional-level diver.
- Ken
Judicial Pratt.