When you cast policy issues in moral terms, you degrade the character of public discourse. You lead people to see conflicting priorities as an occasion for battle, rather than an occasion for compromise. You send the message that policy is best decided by appeals to one’s inner conscience (or, more likely, to the polemics of demagogues), rather than by appeals to impersonal cost-benefit analysis.
… If we’re determined to instill blind moral instincts that make people behave better most of the time, I’d like to nominate a blind moral instinct to respect price signals and the individual choices that underlie them—an instinct, for example, to recoil from judging and undercutting other people’s voluntary arrangements.

Steven E. Landsburg (2013). Don’t cast recycling as a moral issue