There are multitudes of dumb crap people do for “entertainment” that I find appalling and have no interest in, so I respond with the attention it is due; which is to say, none at all. Why waste precious moments of my life, not to mention adopting needless aggravation and stress, by even thinking about it?

In the case of this specific topic, they are not hurting anybody and they are not breaking the law. There are many, many more terrible things they could be doing with their time.

And if FPS (First Person Shooters) is not your thing, than try something like Civilization, or the upcoming Spore. I am willing to bet there is at least video game genera that will appeal to you!