What is your dream use-case?

I grew up with computers but admittedly never really could understand their potential beyond playing games and using apps or surfing the web. Today I've created my own home server using my ISP router and Jellyfin connected to my digital media collection. I'm interested in Moonlight/Sunlight to game on the couch instead of sitting at the server computer and it got me thinking:

What is your dream use case? What sorts of things beyond media playback can self hosting provide that I can't see because of my own ignorance?

Before anyone downvotes and tells me to just google it, I've tried but everyone uses acronyms that I have no point of reference for. Trying to parse through industry jargon is a job in itself and I still don't understand because those terms require further research into them that isn't easily digestible to a less-than-novice like myself. I'm smart in other ways I swear, just having a hard time imagining what else I can do with self hosting that will help my journey.

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