The sad part is, many of these same people are willing to let the Supreme Court dictate when that "point" occurs. As an attorney, I can tell you that no one is less qualified to make such judgments than a bunch of lawyers and judges.
Any "point" in a continuum of change is arbitrary. They are used in law a matter of practicality. Unfortunately the RvW decision used a "viability" criterion which doesn't seem to take into consideration any criteria we use to decide if a thing has rights.
Since I brought it up, what criteria do determine rights? 10 fingers and 10 toes?