ut there's never going to be a "right" answer, because there's no enforcement.
Exactly - I have never been asked to produce a log book being ramp checked, License, medical and radio license plus all aircraft and flight information. In Canada the PPC card is not required document but to not piss off inspectors I would produce it eventually if asked

Commercially a company tracks your time so that satisfies the regs and non commercial, if you own your own aircraft who would care but if you are shelling out money renting the renter might want to see your times and history. IFR currency, well I guess you need to log your IFR time but as for me I could care less. I would never rent and if I had my own aircraft I would file and go. Contrary to belief there is no big fly swatter going to strike you down because you have rubbed up against a minor rule. I knew a guy in Toronto area who files IFR for years and never actually had the rating, never got caught.
There is so much stress and emphasis on over thinking everything. "Thinking on your feet" seems to becoming a lost art, possibly because everyone needs to consult their smart phone or tablet before making a decision.

Sure we should follow the rules but picking pepper out of fly sh1t is overboard. If you get that double registered letter in the mail your interpretation of the regs is about to be tested by a far better legal mind than yours. Making safe choices and only have basic working knowledge of the regs will get you through a full life time of flying pleasure.