Wait, I'm assuming you're from somewhere in Europe, you don't have topical antibiotics available without prescription?!

I wouldn't argue against antibiotics being overprescribed in America, they definitely are. The tendency is for medicine to be prescribed if a patient sees a doctor. Another crappy consequence of an expensive medical system, people won't be satisfied if they spent hundreds of dollars only to be told to rest and drink lots of fluids.

US friends of mine "keep" their remaining prescription ABs for when they are sick again

This is definitely a thing that morons do over here 😂