A non-Jewish sex therapist in Maryland wrote on one of the forums of Arutz Sheva (on the subject of porn addictions): "While many men watch pornography to stimulate their sexual excitement with their wives, the opposite is the case. The experience of our clinic and studies have indicated that pornography deadens a husband's attraction to his wife, leading him to find satisfaction outside of the marital relationship or forcing him to rely on Viagra and the like".
If even non-Jews see the awful results of this phenomena, how much more so should we - the holy people of Hashem - remain strong, and stay far away from such evils!