This is a honest question. I have two RSS services hosted on my server, and I don’t see the point. RSS is by nature distributed, and subscribing to my own server just makes the source of all news being the same. What is the advantage? What do people use it for?
Maybe you don’t run anything worth subscribing to for yourself but if youre running services that have any kind of updates you want to notify people of RSS would be a way to do it. Any kind of blog can have an RSS feed of new posts, you could have a feed of the newest files uploaded to a site.
RSS readers like freshrss let you subscribe to other RSS feeds, so in that case they just work as any other RSS reader.