Now stop and think about that for a minute...What do you suppose would have happened in the 60's/70's if we let the states vote on whether or not interracial marriage should be legal? Would it have been acceptable at that time, because you know there were a lot of bigots who would have said NO WAY!
Your point is well taken. One chink in the argument though, is that the same ones who loudly demand the nation should observe republican ideals when it suits them are also the most vocal in their demands that the nation is "a democracy" when it likewise suits them.
This has been an especial dilemma since the revolution, afterward of which the judicial system was changed to reflect revolutionary change, rather than strict constitutional interpretation - the Republican's 14th Amendment notwithstanding.
The outcome has been the establishment of a dysfunctional arbitrary and capricious Government. The elimination of individual rights and the replacement of those individual rights with easily manipulable group "rights" has left the individual powerless and uncertain before an all-powerful central Government. No one knows where he stands.