They don't want to be exposed if their pants zipper is down or their dress flies up, they want to avoid irritation of sensitive parts of their bodies by seams or irritating fabrics, they are on their period and have to wear it with a pad
Something called herd mentality and I fell for it. I should be ashamed of myself but the religion didn't get me. My mom's not gonna make me believe in Gods just because our neighbors believe in it.