I would absolutely cherish a jumpseat ride, I really, really would.
From the point of view of a passenger who is well-behaved, respects that there are times when the crew CANNOT be distracted and knows that obviously I can't touch a button or a switch, I think it's a shame that flightdeck visits are banned in the UK, thanks to Terrorists and other stupid passengers.
I'll have to wait at-least 3 years before I can fly with an EU airline that has relaxed rules (Parents only travel with UK airlines).
Then again, in a few years time I may be an Engineer going to an AOG job and hopefully getting a jumpseat ride on the way