I'd like it to work on web and Android, sync back and forth properly, and look nice (sidebar, keyboard shortcuts, etc) and nothing else appears to provide this.
Plus, Inoreader allows you to assign a single feed to multiple folders (tag style) which many other readers don't allow.
What I like about it is that you can gradually work your unread list: if you're in a specific feed and mark it as read it switches to the next feed only with unread items. If you do it from a category it switches to the next category. I find it helps a lot going quickly through a mountain of new unread items.
Not saying others don't do it, but this one does, so I'm keeping it.
You can but do you?
I use the Newsblur too, paying for it too but reading around reddit self-hosting is incredibly complicated and then you also need to build and deploy your own mobile apps too