Good news: this website thinks I’ll live until I’m 77.5 years old. Which is plenty as far as I am concerned. Assuming I entered all the answers correctly.
Bad news: I’m already 40% through my allotted span.
The website did have some helpful tips about how I might increase my life expectancy by 2.61 years:
Analysis Results
Not smoking is a great choice! Your life expectancy is maximized by not smoking
If you have 2-3 drinks per day, your life expectancy would be -0.01 years longer
If you do not drive, your life expectancy would be 0.13 years longer
Having a life free from major stress has maximized your life expectancy
If you become a conditioning exercizer, your life expectancy would be 0.52 years longer
If you consume all 5 types of food everyday, your life expectancy would be 0.00 years longer
If you do not have any sexual partner, your life expectancy would be 0.38 years longer
If you sleep 7 hours a day, your life expectancy would be 1.57 years longerIf all of the above choices are adopted, your life expectancy would be 2.61 years longer
I don’t think any of those are worth the time they give you!
EDIT: The same website has told P he’ll live longer than me, despite having a 6 year head start!
Niles's Blog 
Amen. What is a conditioning exerciser anyway? Something to do with hair strength?
And do they suggest any other similarly excellent ways to lose a few months?
84.9 years for me. That appears to be mainly based on taking my journeys with a careful driver! Still, these are presumably the questions insurers use and they’re well motivated to get it right!