OK, I'll bite.
I bought my first raspberry roughly 10 years ago and it was a game changer.
I was a total Linux Noob (being a Windows person) and previously have had
several failed attempts to get into Linux. (These failed because the learning curve
was too high and also I needed the main Windows PC for work.)
With the raspberry, it clicked. I learned Linux at my speed and became quite good at it.
Mainly because of these reasons:
- Having the operating system on a SD card means you can easily back it up or setup your system again.You can fix a broken operating system in seconds (even as a beginner)
- Everybody has the same hardware and they even bring their own Linux. You don't need to decide on the Linux flavor, the tutorials on how to do stuff mostly work.
- Since everybody has the same hardware, loads of hardware extensions came to the market. And they seem to work great.
- It uses very little power and is quiet. It's a home user you can afford to run it as a server
- The small size makes it less threatening that running a proper Linux server. Knowing you can mess up the SD with no real pain helps a lot!
I've used it in many real world situations, mostly as a hardware prototype and at quickly got sucked into production. I've also used it as a home server.
It has proven to be really stable and good enough for low load situations, I still have 2016's pi running 24/7 without corrupting the 8GB SD card.