I can comprehend "S**t" as a cuss word because of its unpleasant association with defecation.

However, I cannot comprehend "F**k" as a cuss word considering that it refers to a "sacred act" associated with love, pleasure, and reproduction.

My suspicion is that "F**k" as a cuss word has "Satanic" origins.

Either that or we are a culture of ordure and sheer ejaculation.