So. Emotion is never "just" emotion. To a writer it's an essential element to lead a reader into story, into time investment for that story, to connect with that story's characters and circumstances, locales and structures, even with the weather and season. It doesn't matter if the writer doesn't consider him/herself "emotional". It does matter that they convey enough emotional investment into the story to captivate their reading audience.
Emotion touches the heart and soul. We recognize that melodrama can overdo emotion. We understand that little or no emotion puts a character into sociopath mode. Each character must establish his/her personality and the story will indicate how emotional responses play out in its telling.
Romances typically create intense emotional reactions and situations for the characters. Thrillers tend to elicit emotional responses from their readers such as fear or anxiety as they dart through the pages of roller coaster events. When humor breaks through in moments of intensity, the reader is grateful for the laugh. When conflicts are resolved, relief is present. The reader can finally relax.
Emotion must be written well in order to reach the particular audience each story solicits. Hearty historicals might only include a few highly emotional scenes while epic sagas of star-crossed lovers will warrant plenty of available Kleenexes for its readers. Whether few and far between or abundant, emotion is necessary to draw the readers into the characters' stories and make them care enough to finish the book.
Father, thank you for your emotional investment in us. We need it and we are desperate for you. In the Name of Jesus, Amen.