So your personal experience matches mine (or we were just unlucky). Almost all my pals and relatives have died well before age 70. Except my Aunt (x2), Uncle (x2) and cousin who made it to 80+ but were vegetables from about 68, didn't know they were married, didn't remember any of their children, a life of pooping themselves, bed sores, and complaining their children never visited them ....... to their children that they no longer recognised. To make it worse one uncle and my cousin were 'angry dementia' patients, super strong and needed to be controlled with drugs. I've had to make new friends with outliers already over 70. Really, really tired of that game now!