I think the reason why is because all the main and recurring characters in the show are all so likable. There's this genuineness about them that is incredibly endearing. Whether it be Tohru and her love for Kobayashi, or Kobayashi and the mother figure she is to Kanna, or even Lucoa and how she tried to help Ilulu this episode, all the characters are just so damn likable. It's hard not to root for all of them.