I have a Raspberry Pi 4 running Jellyfin with a USB HDD plugged in containing many hours of TV and movies and other downloaded videos.
There's a feeling I've had whenever streaming from it that I'd had trouble naming, and I finally realized what it is: It's freedom.
I can't watch two TV shows or movies in the Apple TV app at the same time. It's literally impossible.
I can't watch anything on two devices at the same time (I'm pretty sure). I know if I'm listening to music on the Mac and then start playing music on my phone in the car, I'll come back to Music on the Mac being mad at me.
But my own Jellyfin server? I can open up five browser windows on five different devices and stream on ALL of them. (Server load capacity permitting.) Who's to stop me? Who's to tell me no? It's my server! I own it! It's mine and therefore it does whatever I want, and it doesn't show me ads or delete things I paid for or give me any grief.
In a world where corporations tell you no because of contracts they agreed to, being able to stream whatever the fuck I want, whenever the fuck I want, is a reminder of the freedom we should all have, and it's refreshing.