My comments are always intended to be "friendly," so I hope they read as such.
* Your argument (if I've traced the line correctly) seems to be that because legislation exists against an activity in this country, that it therefore rises to the level of a significant cultural distinction on par with slavery and polygamy.
Actually, that's not quite the notion that I meant to convey. The comments pertaining to slavery and polygamy were in a separate post from the comments on legislation. In the polygamy post, I was responding to the argument that "it's ok for Disney to publish it because it's
their (foreign) culture" by naming some extreme examples of behavior that is ok in other cultures, but not ok for a Disney attraction. The point being that "ok for them" is not a per se determinating litmus test of Disney-attraction-appropriateness.
Legislation is clearly not the sole factor upon which our cultural differences should be measured. It is, however, at least one objective factor. We (states) do not allow individuals of a particular age group to have "relations" with other individuals in a different (younger) age group. Good arguments can be made for and against legislation, and the issue is treated differently in other cultures, in other parts of the world. But regardless of what side of the argument one supports, we have laws to which we can look and, objectively, determine whether it is right or wrong (or, more appropriately, legal or illegal.)
* Secondly, you wrote So, "indecency" is much more than just "simple etiquette." with the implication being that I made the two synonymous in my original post. I was in fact drawing a distinction between them (since as you say, indecency possesses a legal connotation that etiquette does not) but with the larger point that neither of them rises to the MORAL level that your examples of slavery and polygamy would be considered to, by many.
I do agree with you, that is, the "moral level" concerned with indecency is not as extreme as the examples I gave. I would suggest, though, that indecency (and its many regulations) do in fact impute plenty of moral issues. Moral basically means "of or relating to principles of right and wrong in behavior," and that is what legislation (attempts to) accomplish by regulating our behavior, and imposing moral parameters on us, notwithstanding our own individual opinions.
Is one "wrong" any "worse" than another? In our penal system, the answer is usually "yes," hence varying degrees of culpability and punishment. Moral wrongs are not punished solely for being morally wrong. In Florida, an employer can terminate an (at-will) employee for a morally wrong reason, and the employee would be left helpless, without recourse against the employer. At the end of the day, it's not our subjective moral values that we use in holding each other responsible for individual behavior, but rather, the objective framework by which we are governed. (Granted, in the 'real world,' the two are almost always entwined.) A girlfriend who cheats on her boyfriend may be viewed to have committed a moral wrong, but until there's something on the books prohibiting that, there's not much we can do about it.
Tk