You got to remember: back then, cigarettes weren't known to be the cancer causers that they are now. EVERYBODY smoked. That's why every seat on an airplane had ash trays, and you had to specifically request non-smoking sections at restaurants. And there are people older than her that are still alive and kicking.

And who wasn't dabbling with drugs in the sixties?

Some people die younger than others.

However, I didn't not know that she was a decade older than George Harrison. She was old as fuck.

I think a bigger question is, why would John Lennon, who could probably have any person on the earth, choose her? I guess looks really don't matter. He was pretty handsome in his pre-beard phase. She was never attractive.