I'm gonna be so for real, I was exactly like you when I read the Epilogues. I hated them, I thought they butchered all of my favorite characters and basically just ruined Homestuck for me. And then I reread Homestuck, and when I got to the Epilogues I was able to just see it in a different light. I hated specifically the Candy arc which is obviously the one a lot of people have issue with, because it's the one where the most stuff happens and the one where everyone's characters are just out of wack.

The Candy Arc just dials up all of the characters pre-existing problems and puts them at the spotlight so you can't ignore it anymore, and you see how the issues these people had as kids morphs them into awful, terrible adults. I think it's especially painful for a lot of people to read Candy because we essentially grew up with these characters, and so seeing John become a depressed shut in, or Rose and Kanaya having a whole cheating scandal, or Dave and Karkat not even getting together and not even being friends in the end because of all sorts of problems, is like getting splashed with cold water all at once lol.

And it's especially that way if you read Homestuck and then just jumped to the Epilogues. Homestuck ends with all of them smiling towards a hopeful future, and it ends with all of them lowkey hating one another in a separate reality. For what it's worth though, Meat is just as good but just as Depressing because it's more John focused then anything, but in Meat everyone still has problems but are willing to work through them rather than continue to live in this idyllic life.