i'm still arguing that your "you could skip most of it" argument is not a valid point.
Well imagine if there was a new Harry Potter book and in it "Maharizar" who is on Mars, completely isolated from the events of the previous books, gets a magic book that lets him destroy the earth and remake it in his image and completely rewrite history so that nothing in the previous books happened... and this change is not reversed.
You could just skip all the books until the Maharizar books. As outside enjoying them for enjoyment sake, the books no longer matter.
Like I said, that's a ridiculous argument. Because like I said - the point
isn't to see how it ends. The point of fiction is to experience the journey, even if you know how it ends already.
A later book blowing up the world doesn't invalidate what was fun shit in the previous books, not even one jot. If it was you could skip
all fiction by reading the last chapter. Or read the synopses on wikipedia and skip watching
everything. And almost no movie would be worth watching because you "know" the hero will win in the end. All the villains plans were a waste of time, because they were foiled. And you know they're going to be foiled. Every "monster of the week" episode is almost 100% guaranteed to have the monster defeated before the episode is finished. So watching any of those episodes is pointless. Likewise, almost every Simpsons episode ends up with the status quo restored. So why watch them unfold?
After all,
everyone dies. Daily life drama is pointless because you know that they will grow old and die and none of it would matter. But people keep watching it. Why do you think that is? The fact that "none of it matters later on" isn't a valid reason not to experience the
lives of the characters in the story, and the JoJo characters have full and exciting lives.