An older gentleman recently picked a new primary care physician.  After two visits and exhaustive lab tests, the doctor told him he was doing "fairly well for your age."

A little concerned about that comment, the gentleman couldn't resist asking him, "Do you think I'll live to be 90?"

The doctor asked, "Well, do you smoke tobacco or drink cocktails, beer or wine?"

"Oh, no," the gentleman replied. "I'm not doing any of that."

Then the doctor asked, "Do you eat rib eye steaks and barbecued ribs?"

The gentleman said, "No, my other Doctor said that red meat is very unhealthy!"

"Do you spend a lot of time in the sun, like playing golf, sailing, hiking, or bicycling?"

"No, I don't," the man replied, "I'm too fair skinned."

Finally the doctor asked, "Do you gamble, drive fast cars, or chase women?"

"No," the man said.  "I don't do any of those things."

The doctor then looked at the older gentleman and asked, "Then why do you care if you live to be 90?"