HI Ninja: I am very adverse to using anti-biotics, too. For me, it comes down to whether the condition is likely to clear by itself, and how much discomfort my child is in. Most mild infections will clear up by themselves in 5-9 days, anyway. If they are only a bit poorly and any pain can be held off with Calpol, than it will probably be a mild case that is going to clear by itself.
I have found this is especially true with conjunctivitus. Just wait it out, don't touch it! Although splashing in the bath is usually an ok way to clean it, and don't hesitate to give Calpol for the irritation because the eyes do hurt, and Calpol is usually effective enough. It looks awful in the meantime, but I have had the experience and so have my friends who aren't even anti-antiBs, but just got fed up with going to the doctor we all find that bacterial conjunctivius seems to clear by itself in 5-8 days. Viral conjunctivitus (pink-eye without the discharge) you just have to wait out, no treatment for it but painkillers.
Ear infections: again, if it's mild and Calpol is effective, I would wait it out. But I wouldn't hesitate to give anti-Bs if the Calpol isn't effective because to be honest, ear infections can HURT. That said, most ear infections are viral and mild and will clear up by themselves.
The same for coughs and colds, and even things like sinus infections -- they will usually clear by themselves.
And personally I immunise; DH had pneumonia from HiB and as anti-anti-biotics as we are, they (4 different lots, actually ) were the only way to get DH better. But even though I had HIb mildly, and DH had it severely, DS was completely ok, probably because he had been immunised.
The only times my kids have had anti-Biotics was in eye drops -- twice for conjunctivitus, before I became brave enough to just try waiting it out.
I hope you're breastfeeding and want to continue; extended breastfeeding reduces the frequency with which anti-Bs are prescribed in later life. But it's genetic & luck, too. Letting your kids be exposed to household dirt is also thought to be protective.