Those things are called moral and societal standards. They differ from community to community, but a lot of values are upheld universally, all around the globe. Got a problem with that opinion of mine? Feel free to discuss, for all I care.
I am an adult, playing adult games and all's fine with the world. In comparision to some of the earlier examples, I am keeping it under my own roof, instead of risking public embarassment and making other people around me uncomfortable, as well.
Are you a huge fan of LoS games? If so, I am terribly sorry I offended your allmighty personal preferences.
PS. Keep your advices to yourself, okay? I got some for you, though:
Have a nice day.