Your entire counter argument is based on the assumption that any concentrated clan or group of people solely interact [i]with that group[/i] of people. Which, in all reality, is completely and undeniably unrealistic and simply not true. Diversity is wonderful. Of course These people are not barring themselves to play or converse only with those who are similar to them. Further more Even if they did there is absolutely nothing wrong with that. They're creating an experience enjoyable to them. They're not attacking or hurting anyone around them. Yes There are a multitude of topics that can be discussed that only (as afore mentioned [i]generally[/i] ) a single group of individuals portraying a particular trait would understand. To say that they alone would isn't true however. At times it is merely easier and safer to discuss those topics with those who experience or have experienced the same things. [spoiler]I mean. Vaginal discharge in public Guys (or those without a vagina) could listen and empathize but having not experienced it They wouldn't understand it completely. Vice versa with male anatomy or veterans experiencing live fire. [/spoiler]