I used to have a large legally obtained CD and DVD collection. Getting a home media server, ripping everything, and using Plex to access is an awesome upgrade compared with physical media. In particular, avoiding physical media that will break for stuff like kids movies is great.

Also, managing all the photos we have and take so that they are available on all our devices is great, especially since we are a mixed iOS and Android household.

So no, it is not only for downloaders with massive collections of files.