I made the exact same statement after my first eye-opening summer in Europe when I was in college. Of course there are plenty of Euro girls who are also "ruined" but not nearly as many in the USA.
When girls grow up thinking the old, ugly, whorish, drama queens on Sex in the City are cool then there really is no point in a relationship with them because you will always be unhappy since your girl will not even know how to be a real woman.
After decades of being force fed bullshit anti-woman feminist ideology many USA women think that they can be total whores till they are 35 and then they will meet the man of their dreams, get married, have test tube babies, and live happily ever after.
Most of these women BEGIN to wake up around age 29 and realize they have "been had". Look on Match.com as there are TONS of these girls on there. Back when I pushed dating sites hard I used to pick these girls off one by one. In Seattle where I lived at the time there were sooooo many of these hot women who were "sick of the bar scene". LOL Don't these skanks realize that statement makes us think about how you fucked every total drunk loser in town? Now we get to marry you, buy you a fucking house, a car, and then watch your looks fall apart within a few years????!!!! I would rather marry a fleshlight if I had the choice.
I used to enjoy fucking with these women but after a while I began to feel guilty because I never had any intention of taking things further then dropping a load on their faces. The last girl was 28 and was falling in love with me I guess because I was totally neglecting her for the last 2 weeks were were seeing each other. (USA women love to be ignored, cheated on, lied to, etc. Most are in denial about it but try it sometime and USA women will flock)
Sure I have at times played the field and had fun but being in a solid relationship with a wonderful woman who also WANTS a healthy relationship is WAY better than fucking a different girl every weekend.
Plus the monogomous sex is so much better.