We’re talking about a lifetime position here. And the only requirement to pass confirmation is a bare majority in the Senate.
Theoretically, we could be in a situation where 50 Senators are adamantly opposed to a nominee and hate his guts, 50 are in favor based on party lines, and the Vice President breaks the tie. Is that truly enough considering that this person could be on the bench for decades to come?
There’s filibusters of course, but the majority party that truly wants to get its way can eliminate them if they want.
Perhaps if we had a 60% (3/5ths) requirement written into the text of the Constitution, whoever is President at the time will be forced to come up with a consensus nominee instead of picking whoever he wants and expecting/getting a rubber stamp from the Senate.