I heard a couple of 32 year old divers died due to mistakes, better make the age cuttoff 32. Heard a couple of instructors died, better ban all instructors from diving!
Ok now seriously lets stop all the rubbish about age cuttoff. Realistically, if you are healthy enough to dive then you should do so, regardless of age. If you are not (no matter the age) you should not until cleared as healthy. I think its pretty simple. Same goes with "if you dont have the intelligence (read a potential member for the Darwinian theory) then you shouldn't dive either unless you change your understanding and attitude as you pose as greater risk or even more so to your fellow divers.
As many have said, often one appears in good health and something not diagnosed takes a life. Such is life. Be assured, no matter the circumstance, it will affect many people regardless of the situation. That its diving, or golf, or work, it can create risk for others and have a profound effect on them too (speaking from experience, having been in that situation). If I am ever in the situation where a fellow diver is in trouble, all I can hope is that I do the best I can to help them not die. If their death happens, its effect on me is part of living, caring and trying to help.
I intend on diving until my health prevents me. I have been assessed as healthy and once my knee recovers from its latest surgery I will be up and diving again. I would not stupidly dive with a known serious heart condition or such, as I think thats irresponsible, but if I pass while diving, so be it. I could so easily die while driving and kill another road user etc. I think being sensible, responsible about your diving is what we should all strive to achieve and in doing that you are caring and being responsible about fellow divers.