fluoroquinolones are nasty stuff... should be reserved for extreme cases, like anthrax poisoning, etc... where the benefits outweigh the cons.
One of the problem is that they also work really well. A broad spectrum bactericidal antibiotic that works really well, isn't in the beta-lactam family (dodging both beta-lactam resistance and penicillin allergies) is very tempting to use.
It's a hard fight, especially in the outpatient setting, because of this.