I'm sure plenty of people who voted Hitler thought they were in the right side of history until they suddenly weren't. That's the unfortunate part of politics, you have to build a system around not trusting people.
It does have to be justified based on existing law and this is important. But often, existing law only talks about broad principles or is contradictory, and judges are expected to fill in the details. In the case of the U.S. Constitution, these "details" can be really huge gaps.
I didn't mean "what's right" as in "what I feel is right", but in's what the law says. The policies are for the politicians, trying to merge the judiciary and the legislative doesn't sound like such a great plan to me.
If you don't care about what other people want and how the law affects people, then there is no morality or justice and it might as well be a coin flip.
It's strange that the idea that judges shouldn't decide by (future) popularity gets downvoted. At times I don't understand this community at all. Is that a "I believe that my opinion will rule supreme in 20 years, so judges should submit to it now and just ignore the constitution"-thing?
This is what an appeals court justice does and their check and balance role on the other two branches of govt.