The whole SCOTUS nomination-confirmation process has become a joke. I nominate my guy, your guys try to knock him down, and when it’s your turn, I’ll do the same to you. When the two-party system system seeps into our highest courts (as it did long ago), then we’re in trouble.
SCOTUS judges are supposed to be impartial; they’re not supposed to have ties to any political factions, but the reality is that unless they have those ties, they’re not about to get nominated.
A few things to keep in mind, though:
(1) SCOTUS judges picked by Republican presidents have been traditionally less likely to engage in judicial activism (i.e., legislating from behind the bench) or otherwise let their personal views influence their rulings.
(2) They have also proven more resistant to party ideology, as evidenced by how many times Republican-appointed judges have pissed off Republican presidents and legislators. You almost never see this happen with Democrats, and standing up to the other two branches is why we have a SCOTUS in the first place.
(3) Judges picked by Republicans have always had the better track record when it comes to protecting individual liberties. The sole exception to this lies with abortion, but the reality is that Roe v. Wade is in no danger of being overturned at the Federal level. The real threats to abortion (and they are legion) come from the states.