Yea, I used to say that too. But as you get older in life you look for ways to continue to do the things you did when you were younger (quality of life). I imagine if you are in your 70's or 80's that extra five or so years looks pretty dang good!
I never even considered caloric restriction. It never made that much sense to me. In fact, it makes more sense that those who actually burn more calories would have a longer life span based on activity level. In order to burn more caloies you have to take in more calories, otherwise you are burning muscle tissue and wasting away...sort of like what happened to one very strong proponent of caloric restriction.
Dr. Roy Wolford from UCLA died recently at the age of 79. He was on a caloric restricted diet for about 25 years prior to his death. He authored the book "How to live to be 120, and beyond." He claimed many, many scientific studies to back up his claims.
I think the good doctor took in only 1,500 calories per day. Some might wonder if he took his own life. Let's face it 1,500 calories per day had to be torture. Some say when he died (at the age of 79) that he looked like he was over 90!
On the other hand Jack LaLane will be 91 next month and looks more like 70. His method: natural foods, plenty of exercise and a good attitude on life!
Of course, Jack LaLane has no Scientific studies to back that up his methodology. Then again he's still alive..