Saw my doctor this week

I saw my primary care doctor on Wednesday. He said I was doing "fairly well".

A little concerned about that comment, I couldn't resist asking him, "Do you think I'll live to be 80?" He asked, "Do you smoke tobacco, or drink beer or wine?"

"Oh no," I replied.

Then he asked, "Do you eat rib-eye steaks and barbecued ribs more than 1 time a week?

I said, "No!"

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

"No, I don't," I said.

He asked, "Do you gamble, drive fast cars, or have a lot of sex with multiple partners you don't know?"

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

He looked at me and said, "Then, why do you give a shit?"