All four of your reasons are incredibly stupid. I sincerely hope you don't have kids. My daughter plays. She's quite a bit less than 18. She's not violent, doesn't hear any more or less bad words than she does at school or home, and isn't randomly terrified of swords (although a little fear of someone brandishing a sword doesn't sound dysfunctional to me). She has lots of friends. Making sweeping generalizations about other people is a sure fire sign of ignorance. If your kids would be horribly fcuked up by playing destiny, keep them away from it. That doesn't have any bearing on what anyone else should do.