Favorite Sins for Americans

Is the concept of a Favorite Sin falling prey to the pastoral concept that sin does not exist? An Anglican Bishop writing about favorite sin did his research and found "worry or anxiety" to be the sin 60% of Americans felt was a favorite sin they committed over and over. This is in stark contrast to what I would think would be the top three favorite sins of America: Fiscal Libertine Greed, Sexual Libertine Greed, Gourmet Libertine Gluttony. Our broken economic system, our broken homes, our incredibly obese bodies, bear witness to those three sins. But worry or anxiety? Not only is that not a serious mortal sin at all, but to me it seems a virtue- if you don't bother to think about what can go wrong, how are you going to avoid it?