What an odd statement.
No one accuses me of using a thermometer or blood pressure gauge at home for "entertainment purposes."
I used to think those blood pressure machines in pharmacies were a joke. My mother's doctor told us that he thought they were generally reliable. On a whim, I decided to try one. (I actually thought I'd find my pressure was low, because I had been feeling dizzy.)
The high results caused me to see my doctor, who had not checked my pressure the last couple of times I had seen him.
The machine I thought was a joke saved my vision, and perhaps saved my kidneys or my life.
Great story!