Music and movie suggestion algorithms are designed to expand your library by suggesting content they think you’ll like. They do this by analyzing your data and finding patterns. While this seems simple enough, the algorithms lack the ability to detect the nuances of people’s tastes, and this is why the algorithms are so flawed. 

I pretty much universally hate streaming music services. They all promise to broaden my horizons, analyzing my tastes to bring me music I never knew I couldn’t live with out. They can all go to hell.