So much of modern antibiotic use (at least in the U. S.) is hugely irresponsible. Doctors prescribe antibiotics not because they are necessary, but because they are heckled by patients who want a prescription to justify their trip to the doctor's office and because they are encouraged by pharmaceutical companies to move their products.
Anybody who knows anything about biochemistry and/or pharmaceuticals knows that novel drugs that are SAFE and EFFECTIVE are enormously expensive to develop and clinically test. It's idiotic to use these medical tools, which have finite effectiveness due to resistance development, unless they are truly necessary.
Antibiotic-resistant bacteria develop their resistance at a cost - a resistant organism that can out-survive normal bacteria in the presence of antibiotics will probably die out in a normal environment if it hasn't already gained an overwhelming majority. The mutations that provide antibiotic resistance will, in most cases, make the organism less fit or efficient than an unresistant strain in an antibiotic-free environment. The fact that Norway's policies are working is partial proof of this.
In short, people are idiots and everyone should really be following the example the Norwegians have set here.