Wow, that's interesting! The alcohol part doesn't surprise me that much, everyone has tried it at least once in their life (even me! and I'm 18... but I hate alcohol, eww! lol), some more than others :) 80 is better than 70 at least lol
I have inherited some good health from my mom's side of the family - all hard-working German farmers - but picked up some vices from my dad's Scots-Irish side, particularly a taste for alcohol. I'm guessing at the present rate, plus genetic factors, I'll make it into my 80s at least.