Why is pornography addiction such a serious problem?

A very good article...

In ancient times, pornography was “writing about prostitutes.” Today pornography is a multi-billion dollar industry that is spreading a wide net by providing sexual arousal on demand. Unlike most cultures that restrain and channel eroticism and sexuality so that a people’s energy isn’t squandered through dissipation and compulsive sex, modern culture is drenched with sexual images, sexualized.

More: http://www.rbc.org/questionsDetail.aspx?id=57954&Topic=1184