We have a process of judicial review. Once that process plays out to its final conclusion - a decision by the Supreme Court, there is (usually) only one way to remedy it - a constitutional amendment.
Given a sober analysis of the political landscape, and an competent understanding of the amendment process, it's not reasonable to conclude that there is the political will in this country to propose and ratify such an amendment.
Moreover, when looking at attitudes on this issue in varying demographics, but especially the youthful demographics, it's pretty clear that support for this issue will increase over time, not decrease - at least in the foreseeable future - the next 30-40 years. Is it possible that sometime in the distant future, attitudes will change again? Sure. But the immediate future is easy to predict.
It's not cowardice to acknowledge and understand reality, no matter how objectionable that reality may be.
Hmm, people infuence and make or break laws. People can have courage and principles and then things go well. People can have no principles or courage, and things go badly.
As I said, "realism" is very often a thin and transparent disguise for promoting and accomodating evil. And trying to take the heart out of people with principles. And trying to paint people with courage and principles as castle in the air people who are not nice hard down to earth "realists" such as your good self.... It's no different from trying to shut up debate by using the "you're crazy" method.
And having seen your comments since you signed up, I'd sat that is your purpose.