Immunity

This is enough to make me stop using anti-bacterial soap

Chemicals use in anti bacterial soap are persistant in the environment, and the presence is therefore accumulating. Municipal water treatment plants don't handle the chemical, so it transfers to the "treated" sludge, where it is spread on fields routinely. Some scientists are worried that this gradual buildup could lead to "superbugs" being developed out int he wild, negating any so called advantage of using the anti bacterial soaps in the first place eventually.

Ew.