What you call the moral imperative wasn't voted on, doesn't have a police to enforce it, doesn't have a judge to interpret it, doesn't have a media to debate it, and you just might happen to change your mind about it a couple of years into the future.
Even if you say that your strategy is to make people (including yourself) feel guilty about breaking this imperative, and amplify this feeling as much as possible so as to compensate for the lack of organization required for a proper law, it is not certain that that will ever work and I don't know of an example where it did work, although it has been tried over and over. And if I may say, it also corrupts human nature so even if it worked I won't be personally positive about it, but that is just me.
Even if you say that your strategy is to make people (including yourself) feel guilty about breaking this imperative, and amplify this feeling as much as possible so as to compensate for the lack of organization required for a proper law, it is not certain that that will ever work and I don't know of an example where it did work, although it has been tried over and over. And if I may say, it also corrupts human nature so even if it worked I won't be personally positive about it, but that is just me.