There are lots of studies and research that shows sex addiction and porn is a real problem for anyone who get hooked on it. The people on this addictions feel miserable after having the hit, they feel bad with them selfs, like drug addicts. Of course, there are also drugs addicts that feel good and normal about being drug or alchool addicts. But there are others like you all that consider alchool or drugs "an impurity" in the real sense of the word, and abstain from these.
So the same happens in the field of sex, some consider it normal to being hooked with porn and having sex binges, thats their problem and concern. But that doesnt mean or justifies this sexual behaviour, like saying it is "natural need" or "hardwired". In fact that is what drugs and alchool are for the one´s who like to be engaged in those addictions. They say, its my genes, its my brain, its hardwired, its a need, bla, bla