(NSFW?) What do you think are the implications of porn for human evolution?

Here is my thoughts on the issue: natural selection passes on the genes of those who reproduce.

if we put pornography in to the equation and assume that watching porn causes you to reproduce less because it is acting as a distraction/replacement for sex. could it become that those who are less genetically predisposed to watching porn pass on their genes so much that porn eventually dies off and goes extinct forever?

if we assume that porn causes you to be more perverted and makes you work harder to get even more sex, could it become that we all turn in to porn addicted sex maniacs?

what do you think is the future of porn and human use of porn? extincts or thriving?

faulty premise? false dichotomy?