It is well documented that for every minute that you exercise, you add one minute to your life. This enables you at 85 years old to spend an additional 5 months in a nursing home at $5000 per month.
For me the problem comes down to logistics. It's too far of a drive and I can't see flying cross country for that. Not until my inlaws move out of CA. When that happens, all bets are off!
Every day, man is making bigger and better fool-proof things, and every day, nature is making bigger and better fools. So far, I think nature is winning.