Simon: Yes, modesty depends on social norms, and we need to CHANGE some of them. I don't think covering the genitals is a problematic norm as long as it's enforced equally for all genders. But the BREASTS are a double standard. Those who have to routinely USE their breasts for their biological purpose are the same people who are expected to keep them covered, while a DIFFERENT half of the population can reveal our bare chests in many public settings.
Lily: Good point.
(a woman tries to breastfeed her baby at a pool next to her topless husband. She hands the baby to him and says, "Ugh, why can't YOU do this?")