Old man (well only in my 50s but hey it's old) rambling but these were the days. The way it started though is really intereseting: as a 11 years old kid learning BASIC, it quickly escalated...At first we got pirated C64 games (because of course and that's how I became best friend with my neighbors and, to this day, we still exchange Telegram message on a near daily basis) and those games had an "intro" (a "cracktro" except the cracktro term only came much later on). And for some crappy games, the intro was better than the game. So we'd just look at the pirates' intro.
The intros became demos of their own and half my Amiga floppy disks were demos. I loved musicdisks and "diskzines": and some diskzines had articles explaining how to code certain intro/demo effects.
And as of course we had to learn how to code that, these tutorials in diskzines were most welcome. So BASIC gave way to assembly and then 680x0 and x86 assembly had no secret cycles for us.
Then we wrote intros for pirate BBSes etc.
Some of those screenshot do feel like home: XCopy, DeluxePaint, the trackers, etc.
I still have all those machines and some are still working but I don't turn them on often. Last we tried (with my brother) is a SNES and its rare (and now valuable) chinese Super Pro Fighter Q+ copier: a PC USB floppy drive, formatting old 3"1/2 floppies and copying SNES ROM from a modern PC, and we've been able to run old SNES games (fun fact: there were a few demo effects for the SNES that people who had such copiers could obtain on floppy disks).
Another rarity I've got is a pirate 5"1/4 floppy disk reader for the Commodore Amiga (that was supposed to use 3"1/2 floppies, not 5"1/4 ones), with a switch to pick if the Amiga is to boot on the 3"1/2 or the 5"1/4.
Nostalgia is a real heavy drug but those were really better days than ads-infested websites and inferior devices spying on you (looking at the smartphones).
P.S: and don't get me started on the cars from the 80s/early 90s, they were much better than the "I update OTA without your consent / I show you ads on you car's screen / I spy on you": but then I own two very fancy, very spiffy, cars from that era (one german, one italian).