I agree completely with Uncle Ian. Like I mentioned before if one passes his/her test, medicals, etc why not continue if one wants. Quit if you want anytime but don't force those who want to continue to also quit. And for those young copilots/first officers who think they will climb the ladder to captain faster if they get rid of the older ones....wait until they get older themselves and we will see what they have to say!!!
Good Luck Uncle Ian.