You're supposed to filibuster something that is a deep seated issue. . . The idea is to give some time for extended debate but eventually allow a majority to work its will. I do believe there's some reason to have extended debate.
. . . the party extremes have grown farther apart. . . there are now fewer genuine moderates in the United States Senate than at any point in the last half century. Third, there used to be a sizeable ideological overlap between the two parties . . . It no longer exists. Put simply, the Senate parties have become ideologically polarized.
This helps explain the increasing use of the filibuster. As the parties drift apart ideologically, the majority party will more likely introduce legislation that the minority party can't accept . . . Using the filibuster is thus a rational response when one finds oneself in the smaller half of a polarized chamber, which is more likely to be the case today than 45 years ago