appear to be an old boys club.
Well appearances can be deceptive.
There are lots of serving military, serving airline pilots and lots of private flyers amongst the Company's membership - of all ages. Obviously there is an element of needing to have experience to join the Company which will inevitably restrict some from joining, but that is where the above mentioned
Young Air Pilots membership comes in.
Just out of interest and assuming that you are not a member, what difference does knowing the average age make to you? Surely the important bit is experience.