You aren't alone! I will say I'm in the camp of not running from the emotions, especially if movies/shows aren't just doing it to be gratuitous. I wouldn't say "I like it" though. Rather, I appreciate the effort it takes for a film/show to get me to feel a certain way and do think this was such an important part or Rocket's backstory that shouldn't be glossed over. It deserves the respect of the views and the screentime (both for the movie and it's messages about animal cruelty).
I'm still thinking about those 4 creatures A LOT. Some things that helped me. I look at the beauty of how these animals that were put in such terrible/dire situations still found friendship, love, empathy and were genuinely so happy and appreciative to have each other. Heaven, in the MCU, is a real place. So, Rocket didn't imagine Lylla, Teefs, and Floor. He was actually meeting with Lylla and seeing his friends. I imagine that one day, when Rocket meets his end, they will all fly off into the "forever and beautiful sky".