In the case of France, for anyone who understands French, in this debate[1], it is said that when men watch pornography, their brain gets used to a certain category of female bodies to whom their wife/girlfriend does not resemble, hence they lose attraction towards their partner, but also in the women around them and the ones they see in their daily life, in a nightclub ...etc.<p>It is also said that porn is more and more violent, so lots of men are not excited in the normal and romantic way of making love (most likely your wife/girlfriend won't let you treat her the way your brain is trained to through porn)<p>There is also one interesting opinion in that debate (from an author which was not present, but was quoted): when French boys get a bunch of sexual experiences in their adolescence, it is normal they loose that sense of romance and attraction once adult.<p>[1]: <a href="https://www.youtube.com/watch?v=AqrRSF8rrlU" rel="nofollow">https://www.youtube.com/watch?v=AqrRSF8rrlU</a>