My wife is the best, hot, great mom, loves sex, etc. Don't need anyone else at all but man o man would I love to fuck some of these gals at my work, at my gym, at the store, walking down the street, on tv.....
That will never go away. Men are naturally wired to want to just bang the crap out of anything that looks good, then move on to the next one.
I could never do that to my wife though, because I would wager the lives of my entire family that she would never do that to me. I'd feel like the world's biggest scumbag if I fooled around behind her back.
That's why I can't stand women who flip out when their husbands look at another woman. Who gives a shit? Are you really that insecure that you think he's going to jump into bed with the first woman he sees? If he does, I'm not sure why you're so desperate to hang onto him in the first place...