I don't live in the US, so I can only tell from my country, that I think is even more what pisses you off.

I don't think, that every use of medicine should be regulated, but antibiotics I see different and I am really not amused hearing, that you can get them in fish stores ...

The problem of modern medicine today is, that more and more resistances occur. The reason is: Overuse or wrong use of antibiotics. That problem is already causing many, many deaths and extraneous diseases every year. The problem will grow.

Of course, the main reason is -- as much I know -- the use of antibiotics in meat production. But even then, when everybody would have free access to antibiotics, the problem would be worsen a lot, since most people even in western world are not ready to handle them right.