It is a vicious circle.
Men and women have their own Achilles heel when it comes to sinning, which is why there are more men in prison. The way they hurt tends to be more “verifiable” and physical. And pr0n is not just a male issue. When women let themselves go and have six months headaches, ignoring the biblical “your body is not your own” teaching, men WILL find other avenues.
The older I get (I’m 58 now), the more I see sex as similar to eating: Eating is necessary for physical health and sex is necessary for psychological health. And just as you can ruin yourself with junk food, you can ruin yourself with “junk sex”. And the wife that does not even attempt to meet the husband’s appetite in both areas is playing with fire.
Not that the woman is to blame. Far from it. But once she knows the risk, she may at least try to do her part to nurture a marriage where the risk is at least mitigated. And then the husband has to do his part.