Well-intentioned advice to pilots declined via the most sanctimonious and "I know better than you" attitude.
E.g. helicopter pilot lifts from a private site 3 miles west of a well known and regularly busy airfield (A) and doesn't contact their ATC. Airfield A is using runway 27 and launching various types for training etc. Instead, pilot calls the next unit (B) several miles further up his intended route. Controller at B politely suggests, for future ops out of private site, pilot lets ATC at A know what he's up to. Reply: "I'm outside their ATZ, I'm not in controlled airspace, I don't have to speak to them at all."
Only trying to help you and other airspace users, sunshine, no need for the lecture, thanks.