Melissa I wouldn't feel bad about not boiling, some moms swear they have never needed to, and never have, and like you said no ill effects!
I boiled for about 2 months, then dh and I realized that time=money so if we could cut out on the length of time it took to make the 22 bottles we had for the twins we would be better off... we went to a bottled water store, bought a few big bottles (like the ones that go into yuor water cooler) and bought a $15 pump that goes in the top. Making bottles is so easy and we always have a spare bottle in the house. It costs us $2.30 Cdn to get 1 big jusg that lasts us at least 2 1/2 weeks... SO worth our time. If you want to go this route, most grocery stores sell the water in the big jugs. We found it much cheaper at a small mom and pop shop in town.
HTH
Jod