You have never had a vessel wake you badly that damage or injury might have occurred yet to be discovered? (A LA Mules incident last year)...or maybe the damage is evident yet you can't get anyone to respond immediately?
You never had someone inaccurately accuse you of not following the rules?
You never had a disagreement (either party) with a draw bridge?
You never had someone almost hit you in the fog and blame it on you though they were neither showing l8ghts, sounding fog signals or making prudent security calls?
You never had someone hit your vessel while entering or exiting a marina?
These are just a few types of incidents that happen pretty routinely with cruisers...logging what you believe to be true is invaluable if the log becomes necessary at a future date..
We record things like you're describing but other things too that most would think are silly. A few examples.
-Tows that don't respond to radio.
-Lockmaster especially helpful and what dessert we gave him
-Names of customs officials and notes about them and dealing with them.
-Bridge tender who is always grumpy and tries to get out of opening, but ultimately is nice in his own way. One we first said, "Sir, it might possibly clear with all the antenna down, but it's way too close for us to safely try even then. If you have a problem opening now, we'll wait and go through with the next boat you open for. He opened and has every time since. If a clearance is 22' and with everything down I only get to 21'8" and there's a lot of activity on the water with wakes, I'm not going to take that chance. Key is if I can lower everything and safely clear, not a chance I might clear.
-Notes on dock hands, the nicest and the least likable.
-Boat that was operating recklessly and from behavior and response on radio, operator appeared quite drunk but we detailed each boat he put in danger. He ended up in cuffs and the boat docked. Fortunately when the LEO first observed him his behavior was the same we observed, but we did fill out a statement for him.
-Interesting house under construction to check out next time through.
-Water skier pulled around and then sharply across our bow.
-And the one you mentioned of being accused of wake, when not in a no wake zone and creating minimal wake, just because they didn't like our speed. Our speed was why there was no wake.
-Section of a marina to refuse to dock for whatever reason.