I know of no good evidence anywhere suggesting genetic transmission of sexual pathology. And they move to live children. I know because I treat these children. The only way the marriage can be sustained, if at all, is through bizarre forms of sexuality, often against the objections of one of the partners. Even then one must move on to multiple sexual partners to continue the wild goose chase that inevitably ends in the wilderness of guilt, frustration, and emptiness.
Pornography presents an unreal view of human sexuality.
It is an exaggerated, fantasized view. If a husband or wife see this perspective as the norm, it is going to do a great deal of damage to the sexual relationship. God is very careful to warn His children about moral purity. But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart. For God hath not called us unto uncleanness, but unto holiness.