This case is not the end of the saga -- it just defined the "Miller test" which established a three-pronged definition of obscenity. This test itself reads like an anachronism to any modern viewer. Subsequent cases further narrowed the definition of speech that can be restricted.

Ultimately, this is purely about the first amendment (which is why we learn it in high school). The fundamental principle is that the definition of "community standards" matters a great deal, and if you define obscenity too broadly, it becomes a loophole for censorship of all kinds.

Said differently, the fact that you don't see redeeming value to some form of speech is kind of the point. There are three hundred million other people with opinions in the USA, and if we let all of them have a say in what speech gets labeled offensive, then freedom of speech and expression is a farce. Only when you set extremely stringent standards for limitations on free expression - even when it is offensive to you - can you have a society where free expression is a right.

(For what it's worth, most cases about porn and the first amendment make very convincing counterarguments on the points you take for granted, as you might expect for arguments at the Supreme Court.)

I would claim that the vast majority of people in private don't believe the majority of porn is offensive