(1) They desire Northern European women, either because they believe they are more attractive or to raise their status.
(2) They realize they face competition for the minority of exogamous Northern European women from every other non-Northern European group on the planet, and don't like their odds. (Guy White: "I never went to Sweden as a single man, but I doubt it would be easier for me to pick up women there than in Alabama, Italy or New Zealand.")
(3) They believe deprecating Northern European women (and/or Northern European men) improves their chances -- or at least makes them feel better about their lack of success -- with Northern European women.
My information is based upon a three-and-a-half-year study of the Italian slum district of "Cornerville" in "Eastern City." [. . .] In the social- and ethnic-group category, the most desirable woman for non-marital sex relations is the girl of old American-stock background, preferably blonde, who has a higher status than the corner boy. Once I was walking through the aristocratic section of Eastern City with a corner boy when we passed a tall and stately blonde, fashionably dressed, and very attractive. My companion breathed deeply as he said: "The old Puritan stock! .... The real McCoy! Wouldn't I like to give her a belt."Compare:
The attraction of the native stock is not confined to the lower-class Italian. Mario Martini was born in Cornerville, but as he became successful in business he moved out to a fashionable suburb. He married an Italian girl and raised a family, sending his children to private school. He had many business relations and some social relations with upper-class Yankees. He made a practice of hiring only girls of native background for his secretarial work, and on some of his business trips he would take one of these girls along-for sexual as well as secretarial purposes. One of Martini's former secretaries, who told me this story, was a girl of rather plain features, which emphasizes the prestige of the native back-ground even for a man who was as successful as Mario Martini.
[WF Whyte. A slum sex code. American Journal of Sociology, 1943]
One of the manifestations of this jealousy of the fair skin of the Nordics is shown in those numerous cases where members of the colored races, or even dark-skinned members of the Nordic regard the possession of a blonde woman as an assertion and proof of race equality. This has been true historically since the earliest times. It is more than ever in evidence at the present day.See also Philip Roth, Eldrige Cleaver, etc.
[Madison Grant. The Conquest of a Continent; or, The expansion of races in America. New York, Charles Scribner’s Sons, 1933. p. 15.]