My wife and I enjoy an occasional heterosexual adult porn movie. Some of the scenes are hilarious. Neither of us has turned into mass murderers, and we are going on 32 years.
It sounds like you and your wife are normal.
But advertising for anal sex ... and photographing oneself with an erection hundreds of times may just not be normal.
What! You've watched porno and you haven't turned into a raving, cheating, child-molesting, scum-sucking dirtbag? How dare you watch porno and still love your wife?!