i agree with what you say. the answer to your question about why is this. most people will tolerate it and just turn their head or walk away. some wont. i play softball in a mens league. couple of weeks ago 5 or 6 guys from my team were sitting in the stands waitting to play the next game. on the upper part of the stands was 5 or 6 guys from the team we were about to play. these guys were like early 20s. our team is mostly middle aged guys. in the middle were wives of other players and small children. the young guys started talking just like you described.

the women were very uncomfortable with this. you could see it on the faces. one of our guys stood up and told them to kick off that kinda talk in front of the women and kids. the answer came back...what are you goina do about it. at that point we all got up. climbed up the bleachers and sat down with these guys. the guy from my team explained it like this in a quiet way. you can STFU.apologize to the women and keep your mouth shut or...me and my guys will take you into the parking and kick the shit out of you and your friends. you decide. he thought about it a second or two.

went down two steps on the bleachers and said. sorry about the language. well knock it off. the ladies said no problem. he came back and sat down. my player said to him. good move..have a good game..and we left them alone. the moral of the story is this. people act that way because its tolerated by others...BUT NOT ALWAYS.