I felt very similarly to you at one point. I was never resentful, just depressed. I grew up with these characters and I felt a massive heartbreak seeing things turn to shit in the way they did.

As with any sort of alienation or depression, often the solution is creativity.

The main turning point for me was writing John: Load Previous Save ==>. It was the greatest thing I did in terms of restoring my love of Homestuck. I think turning that heartbreak and hopelessness into creative energy reminded me of the love I had for Homestuck, and made me want to keep being in the fandom. I think a lot of writers do this sort of thing to "stick it to hussie" but I knew that wouldn't help me. Instead, I spent years trying to recapture the tone of the comic, the voice of every character. I spent hours pouring over the pesterlogs, analyzing every character relationship in detail, reading Hussie's commentary, and making my own. In doing so, I fell more in love with homestuck than I had ever been, but I finally had the power to shape the story I loved so much. And in doing that, I built a community of people who wanted to hear what I had to say, who thought my opinions and contributions to homestuck were meaningful. And that community would not exist without the epilogues, so I learned to appreciate them, even if I don't think I'll ever want to read them again.

https://archiveofourown.org/works/56125846/chapters/142565932

If you want to check it out. It's still in progress, and I'll be turning it into a graphic novel soon. If you don't, try doing it on Dreambubble or another roleplaying site. Draw fanart. Find your fandom niche and build a community around what you love doing.