I agree, using antibiotics for colds is a bad thing.
However, I get a bacterial sinus infection after every single cold. The cold sets my already overactive sinuses into overdrive, then they get congested and breed bacteria, I guess. Whatever the cause, I can stay sick for two months after a cold, or I can take antibiotics and be sick for no longer than two weeks.
You guys NEED to get some Smart Silver and a nasal sprayer and shoot that up your nose to kill all the stuff in there without affecting your immune system. It is also good for N1H1 prevention and curing once you get it.