About 40 years ago I had chronic kidney problems, which resulted in many home visits from the doctor. On one occasion I asked him if he thought there should be a charge for home visits and he was absolutely against it, on the grounds that patients who needed a call-out might be put off asking for one.
This was in the days before appointments to see doctors - you just went to the surgery and waited your turn. On one occasion my wife was waiting for this same doctor; he came into the waiting room, looked round, pointed to 3 people and said "You, you and you OUT; you're malingerers". They were Monday morning regulars, looking for a reason to not go to work and he knew his patients.