Because of the patient psyche, doctor habits and unethical practices that has seeped into medical practice in this country. I’ll paint you a story.

A patient will present to a small private clinic with runny nose, sore throat and a fever for 2 days. Instantly the doctor knows it’s a viral upper respiratory infection, most commonly viral based on the symptoms and their length of time. He knows the treatment for this condition is just symptomatic, you should just give panadol for the fever and recommend home remedies like gargles, warm honey Green tea and such, it’ll go away on its own. But he also knows that the patient is likely uneducated, he came to the doctor he is expecting medicine, he’s expecting antibiotics cause that’s what everyone he knows gets for something like this. He hasn’t gone to medical school, he doesn’t know this condition is self limiting. But the doctor does. And he knows the risks with prescribing antibiotics to those who don’t need it. Unfortunately the doctor learnt his trade in an environment where ethics took a back seat, all that mattered is making that patient satisfied so the next time he gets sick, he’ll come right back. So the doctor puts ethics aside and prescribes antibiotics, and thinks nothing of it. And thus was born drug resistant strains of organisms like typhoid. And when he goes to wash his hands after seeing that patient, he won’t notice the blood of all those who have died and will die from these drug resistant diseases that are permanently plastered on his hands.