the judiciary is one of the three branches of government and is every bit as important to a democratic country and the individual rights we hopefully have as the legislature and executive branches are for it determines what the law of the land is
now, I don't really want to get into a theoretical discussion as to whether judges are law makers in their own right or simply interpret what the law is... but the repealing of Roe v. Wade is precisely what the highest appellate court is supposed to do if in the judges' opinions a matter comes before it justifying repealing a previous precedent by which a similar/same matter(s) was determined... and that happens all the time --> eg. just look at a history of the High Court here
the problem with the US is just how politicised the Supreme Court has been for decades... just consider Justice Brett Kavanaugh --> a conservative, a member of the Federalist Society, a Yale Law School graduate of course, served on Ken Starr's staff when investigating Bill Clinton, was one of the "elves" that covertly assisted the Paula Jones lawsuit against Clinton, worked in the George W. Bush Administration and then when a Republican President was elected after Obama's two terms, Kavanaugh was the second name off the rank to be appointed by Trump and you saw the circus that that degenerated into with the sexual assault allegations and the confirmation hearings and Kavanaugh claiming to be the victim of a Clinton inspired conspiracy etc.
and we now see an alleged assassination plot against Kavanaugh following the above repeal
what should be an impartial and revered body has been infected with this politicisation and tribalism