Maresias-----I would be careful with such unfounded general comments about age 60+pilots. Psycho/Motor skills don't magically disappear on ones 60th B-Day. You have observed two seasoned pilots as have I in my 40 yrs of Military/Airline aviation career, but I have also flown with those many years younger that fit that same scenario.
Some older guys have also lost so called established pensions, experienced life changes etc which are not planned. If their skill set and health allow them to continue they can hardly be classed as a safety risk.