It's because this is yet another example of a smaller issue taking eyes away from much bigger issues.
I've never understood the preoccupation with what goes on behind the bedroom door. It is spoken about far more often with far more urgency than other issues, like obesity/gluttony.
So my point and question is why do people labour so fervently to highlight an issue that encompasses 4.5% of the U.S. population when there's another sin that encompasses 21% of the U.S. population?
My guess is that it's easier to point the finger at other sins as a means of deflecting from our own. And in terms of obesity/gluttony, it's become so commonplace that most people don't consider it a sin at all.
That is a massive problem that needs addressing. Because those that sit there wagging their finger at homosexuals or non-traditional marriage arrangements whilst obese themselves, well, they are destined for the same fate as those they're condemning, yet no one wants to raise the subject.