Well, if you aren't a troll, "Bob", what exactly is the disgusting part? How is it immoral? Most humans are aware that breasts are functional structures for feeding babies. Babies have to be fed frequently throughout the day. Public bathrooms are unsanitary for that purpose. Most women feed their babies discreetly (assuming the sight of a breast revolts you). It's hard not to, since the nipple's mostly in the baby's mouth and the rest of the breast is as covered as anyone's breast in a modern bathing suit is, if not more so. Most women don't particularly want their milk filled breasts stared at, and most people aren't interested in staring.

C'mon, give us your reasons.