The "idea" behind the filibuster is that if a Senator is SO convinced that the majority is making a bad call, we OWE it to ourselves to let that Senator make himself and his case known. Who knows?.....maybe he'll actually convince the majority that it was making a mistake and change its mind? Or...maybe he won't. But in either case, it would be worth our while to hear the guy out.
I'm okay with a new filibuster regime that returns us to those principles.