I will be happy to admit that my reflexes are not those of a 40 year old, but the 40 year olds are not those of an 18 year old either. I believe that my decision making skills are just as sound, if not better then they were when I was 40. Not to brag, but if a particularly difficult missions comes down the line I am usually the one asked to do it. I routinely put in 7-8 hour days and have no problem getting in and out of the cockpit or climbing up on the roof. I am no superman, but am a good pilot who just happens to be 60 years old instead of 40.