Whilst I agree with Centaurus about the pleasure of flying, I am not sure that regulatory authorities should take that into account when drawing up legislation to determine what age a commercial pilot should retire. Like it or not, as we age we slow down and unless we, as a group, accept more stringent medicals throughout our careers which would doubtless cause more of us to retire than it does now, I doubt any legislator would be likely to support such an extension to the retirement age. Regulators tend to view things through the lens of the tabloid blame game, which is why we have some rather silly rules on jump seats etc.