In the end it comes down to this IMO... sitting inside your skull is the greatest computer of all time. And it reacts to "programming" just like any other computer. You keep programming it with shit, eventually that 'shit' will start, to differing degrees, to affect your judgement, decision making & reactions.
If, as reported on
Slashdot, magnetic fields can affect a persons moral judgement, what does exposure to thousands of hours of violence & graphic sex scenes do over time? Nothing? I doubt it.
In a 1992 study it was estimated that by the time a kid reaches 18 they've been exposed to 200,000 acts of violence on TV. And the concern then, 18 yrs ago is the same now, i.e "that children who are inundated with the images of shootings, bombings and rapes will become desensitized to such violent acts and possibly learn to see them as valid responses to life's stresses."
But then of course, if all the world is morally degenerating at the same rate, how do you benchmark what's normal any more?
Is our society today a replay of the Roman times when people derived their entertainment from violent & bloody circuses & sexual perversions? Appears that way to me.
And we all know the way Rome went after that.