AA,
Started Commercial flying at 30. Now 34 flying UK onshore IFR.
IMHO the rules should be changed for all the reasons given.
I fly with a couple of guys nearing 60 and their experience is invaluable.
As I see it, if you can still be a brain surgeon at 60 then you should still be able to be a pilot ( so long as medically fit and able to pass the required opc/lpc)
FW