In almost 50 years of a conservative Supreme Court majority, what major liberal precedent has been overturned? Basically none. Heck, Roe itself was a 7-2 decision with two Nixon appointees in the majority. Roberts won’t vote to overturn Roe, neither will Gorsuch, and probably neither will Kavanaugh. Kavanaugh, a Kennedy disciple, won’t undo Obergefell, probably neither will Gorsuch. History shows that conservative justice at best hold the line on social issues, or continue to move forward.

Look at the political debates likely to come up over the next 10 years and tell me where libertarians are aligned with liberals. Apart from the things I mentioned above, cases that will come up may include the constitutionality of a wealth tax, changes to equal protection to allow discrimination in favor of particular groups, firearms confiscation, etc. (I’m not saying all of these will happen, I’m pointing out what the next legal battlegrounds will be.)