4 You’re Heavily Invested in Apple Music and iTunes
The HomePod is a great music player… if you stay within Apple’s perimeters. It’s designed to work well with Apple Music and iTunes. If all of your music comes from those sources, then the HomePod can be an excellent audio companion. If you like to mix it up with music stored on different devices and platforms – and if you don’t use Apple Music – then the HomePod becomes very limited.
Also note that if your family does use Apple Music, then the account will continue to “learn” musical preferences based on what you ask the HomePod. If people start telling the HomePod to play wildly different types of music, your Apple Music account may get a little confused about what you like. Currently, there’s no way to quickly switch between Apple accounts using the HomePod.