How long do you think you will live?

My mother turned 80 yesterday and someone asked her if she ever thought she would live this long. She said no. But it got me to thinking and that led to wondering about others. So….
How old are you now and what do you truly think will be the last birthday you have?
Me, I’m 57, relatively active and healthy and see no reason I should not see my 96th birthday. If I so choose.