My poop and I are close. I don't want anyone else smelling or hearing it, it's mine. Also, I just can't relax knowing that any minute, the bathroom might be full and someone will be standing there waiting. Which is more likely to happen in a ladies' bathroom.
Now as far as sanitary products go, I know that some women like to be discreet about that and that's why they started making pads and tampons with fabric wrappers. I don't care, I'll crinkle wrappers and peel the backing off of pads with a vengeance!