"As you get older your friends drift away, your relatives don't come to see you any more, and you loose all interest in sex.
There are other advantages, but these are the main ones."
Alan Coren (1938 - 2007)
Reaching 70 is probably better than the alternative. Much better, in fact.
However, being alive is not it's only attraction. It's the start of the age of freedom.
Indulgent habits which involve your mouth are almost always pleasurable, but will almost always kill you. Fortunately, they'll take their time. 20 years or so.
This is a pretty frightening concept if you happen to be, say, 43, but for a 70 year old who has observed the miserable aliquot of joie de vivre enjoyed by your average 90 year old, it seems about as scary as a three year old kid in a Halloween mask.
So if you're 70 and are hankering for the joys of being over 90, go right ahead and be abstemious.
Otherwise, it's party time!
You want to take up smoking? Go for it!
You think "exercise" is covered by getting up from your TV sofa to go to the beer fridge? You're doing it right!
Pizza, ice cream and wine for dinner ? You bet!
Beer and chips for afternoon tea? Great choice!
You've got 20 years left.
Don't waste them.