>>20965524I disagree. There's a difference between imparting emotion into your story, and actually feeling it yourself as a writer. I've discussed at length before about how the author should distance himself from falling in love or detesting the characters in a story in order to give them all a fair portrayal. Assuming you hate Ash Ketchum, but you have no choice but to write a story about him, there is a very high probability that your dislike for the character will influence the story. Whether it is by subtly making him seem more and more awful in comparison to others or just straight up giving him a bad day or complaining about him through narrative. There's a lot that can go wrong when writing in a judgmental, partial manner. Much more than can go right.
Yes, you have to feel and like what you are writing about in order to become more invested in your project. But you have to draw the line and take a step back if you realize that you're gone a little bit too far when crafting your story. Remember that writing a story, especially fanfiction, should be done with the intent to entertain first.
Deliberately writing a character bad because you hate him/her, or making a character spout out your ideals or beliefs despite being completely unrelated to the character (e.g Ash talking about how catching Pokemon is bad) is not entertaining. It's confusing, and causes suspension of disbelief to fail.