You don't have to, no. Don't make weak excuses like that though. If a kid has Internet connection he's already seen and heard worse then what he will raiding with you.
so what you're saying is that it is morally okay for me to add invite a 13 year old or younger into a room that clearly expresses adult humor and language because he or she has already heard it. i should then assume that they have also heard all the bullying and racism within online gaming and allow myslef to be the "live marshall" and contain it.
maybe i just dont want to do any of that and game with older players.