Longevity or quality ?

Many celebs ( including Elon Musk ) quick answer to how long they  want to live is " 100 " ! 

Any one can tel me why ?

They probably never seen or met a person over 70 ..Never mind 80 and 90 ....

My strong beliefs that 99.9 % of the people are living in denial . ( day dreaming )

Obviously Aubrey de Grey is not one of them :)