It's quite normal for a man to watch porn and fantasize. There's nothing wrong with such behaviour. Be glad your man is not philandering. Monogamy would be monotonous were it not for such pleasures. You mention girlie magazines. That has been left far behind by the stuff online in the form of videos and pictures. I have no problems if my partner visits these numerous web sites, personally. I would have a problem if he chose to ignore me and used these images and fantasies to satisfy himself instead of me but I don't see them as any competition

They play a complimenatary role, rather.