imo, Grinding can be fun, especially if it actually feels rewarding. For example, Dark souls or Borderlands, farming for the money/souls and perfect weapon or in Final Fantasy working toward the ultima weapons. With pokemon there isn't much reward as you are constantly progressing regardless of if you continue playing the story or just start murdering innocent pokes. Besides, if you have to start grinding, just find something to listen to and feel your brain rot away ^.^. (Thank God/Ame that grinding is optional in this game tho)
Edit: I already went to heaven ^.^