Curious Pax,
Don't get me wrong, I also regret the fact that the World changed and that those of us who liked to visit the sharp end (and those that used to enjoy allowing it) have been denied the opportunity.
In 10 years prior to 9/11 (the last time only 4 days before), I waved my PPL and asked on many occasions - I was never refused that I can remember.
My point was that a 100% ban means a 100% ban. Harsh maybe, but the only way to be certain there is no ambiguity or doubt.
A Capt who has to enforce the rules when he is in charge should set a better example. Would he allow a fellow ATPL travelling on a private journey as paying pax to visit his Flight Deck, I wonder?