Yes, I expect that my opinion won't always line up with what the courts decide. I think that's part of the deal in living under a form of government where we have courts and we make it the courts' job to decide such things. Or in other words, my support of the constitutional system of government is not a confidence in my interpretation of the Constitution, it's a confidence in the system established by that Constitution reaching good results.

Frankly, I don't often have a strong opinion on whether something is constitutional or not, because I'm not a constitutional law scholar, and both the judges and the lawyers are more qualified than I am. If you asked me in 2015 whether Obergefell had a constitutional right to get married, I probably would have looked at the circuit split and shrugged. Who am I to have the right answer when a bunch of experts can't agree? You may as well ask a Supreme Court justice to code-review a kernel patch I wrote - on what basis should they have an opinion on it?

But there are rare times when an obviously unconstitutional law gets passed. I did believe that the "heartbeat bills" that were recently proposed and passed were unconstitutional, because of Roe v. Wade, and it seems like the courts have generally reached that conclusion too. Those are great examples of laws where I'd be supportive of the state attorneys not wasting resources on defending them, because I think it would pretty clearly be a waste. (But if the courts were to say there's some reason that these laws don't run afoul of Roe, then I would suspect they understand the Constitution better than I do and I would try to understand their reasoning. That likely wouldn't change my mind on whether the law is moral, but I would feel like I should hear them out on whether it's constitutional.)

Sometimes I continue to believe that the courts made a mistake, but I understand that my opinion isn't the one that counts, the courts' opinion is, unless I can change who's on the courts (by voting for them or for the people who appoint them, or by supporting those election campaigns).

If it ever happens that I see something where it seems like the courts are so obviously wrong about some law's constitutionality, to the point where I can no longer trust the courts to enact justice in their conclusions about anything, then I would be obligated to oppose the whole system of government. But that's a very high bar. Even after Dred Scott v. Sandford, the primary conclusion in terms of the constitutional merits of the decision (as opposed to the moral merits) seems to have been that the Constitution needed amending, not to that the system reached the wrong conclusion with the Constitution as it existed.

(To be clear, there is an argument that Dred Scott was wrong given the Constitution at the time for trying to interpret Sanford's right to property in the way it did. That argument was used by Scalia to dissent in Planned Parenthood v. Casey and by Roberts to dissent in Obergefell v. Hodges. If my goal is morally-good decisions aligned with my morality, it would be counterproductive to agree with Scalia and Roberts' argument that Dred Scott was bad because it was invalid.)

So far, I have not seen anything from our present government - not DOMA, not asset forfeiture, not the immoral restrictions on medical care that certain states are passing lately, not the deaths of innocents both by domestic police and overseas soldiers, not our treatment of people trying to cross the border, much as I hate all of those things - that is bad enough to compel me to question the whole system of government. Every year I decide to pay my taxes (or, more practically, to keep my high-paying tech job that results in more tax revenue from me than the government spends on me), I decide I don't have a moral objection to the system of government, and I can satisfy my moral obligations by using the levers that system gives me as a voter.