You were kept safe by heard immunity as the people around you were largely vaccinated. Vaccines are not harmful (outside of allergic reactions). Fluoride in the water isn't "extremely harmful" either, and its presence is by and large responsible for the drastic improvement in the quality of peoples teeth in the developed world.

Whether or not you never got sick as a child, has nothing to do with your vaccinations as those common sicknesses were not protected against by vaccination anyway.