A 75 year-old man goes to his doctor for a check-up

Doctor: “You’re doing fairly well for your age.”
Patient: “You think I’ll live to be 80?”
Doctor: “Well, do you smoke tobacco or drink beer?”
Patient: “No, I’ve never done either.”
Doctor: “Do you eat rib-eye steaks and barbecued ribs?”
Patient: “No, red meat is unhealthy!”
Doctor: “Do you spend a lot of time in the sun, such as playing golf?”
Patient: “No, I don’t.”
Doctor: “Do you gamble, drive fast cars or fool around with sexy women?”
Patient: “No, never!”
Doctor: “Then why in hell do you want to live to be 80?”