Harry recently had a full medical check up. When he returned 3 weeks later after the exhaustive lab tests were complete, his doctor said he was doing "fairly well" for his age.
Harry was obviously a little concerned about that comment and so asked his doctor "Do you think I'll live to be 80, doctor?"
He replied, "Well, do you smoke or drink beer?"
"Oh no", Harry replied, "I've never done either."
Then the doctor asked, "Do you eat grilled steaks or barbequed ribs?"
Harry replied, "No, I've heard that red meat is very unhealthy."
"Do you spend a lot of time in the sun, like playing golf?" asked the doctor.
"No I don't," Harry replied.
Then the doctor asked, "Do you gamble, drive fast cars, or mess with women?"
"No," said Harry, "I've done none of those things."
The doctor looked at Harry and said, "Then why do you want to live to be 80?"