Eh, I wouldn't overemphasize the role of multiple partners in this sort of behavior. I think rather the determining factor is that the West and the USA in parti

Eh, I wouldn't overemphasize the role of multiple partners in this sort of behavior. I think rather the determining factor is that the West and the USA in particular has gradually adopted a more and more radically atomistic individualism over the past few decades, which, no surprise, has the ultimate effect of making the average citizen a selfish person that isn't very into the idea of commitment in the face of challenges.