Nice to see someone older than me. Just turned 67. I was a smoker as well. Quit 3 times for 4 and 2 years and it's been 12 years since my last cigarette. However, I started smoking cigars about 5 years ago, quit those a month ago and weaning off by smoking the smaller Colt cigars. My father smoked, but not heavy. Most of my friends as well.
Genetics are probably the biggest factor in longevity as well as lifestyle, obviously, but knowing this, can help you by making sure you get regular check ups and adjusting your diet to help along the way. Everything in moderation is the best way to eat. Staying active is also essential as we get older. Keep moving as much as you can. I played hockey most of my life then got lazy for a few years but have been quite active the last 4 or 5 years. I'm 6' 2", 207 lbs. I've had high cholesterol since my 20's and began taking medication about 25 years ago for it. My 63 yr old brothers (twins) are health nuts, never smoked and hardly drink, and one of them actually has high blood pressure like my 88 yr old mother. My father died at 80, thanks to a bad surgeon. Anyway, life is a battle and you can help stack the odds in your favor by staying active and eating well.