What is your special interest?

Game preservation. I got into it last fall when I learned about OpenGOAL for the Jak and Daxter games. I grew up with those games and were some of my favorites from that generation.
I then learned how easy it was to rip PS1 through 3 games and how simple it is to set up the emulators for each console. I have a sizable collection of games for those generations, so I started ripping.

I then remembered watching LTT's video about how to jailbreak the Switch. I bought a used Switch from a friend pre-pandemic, but never played the games because I never cared for playing on the Switch itself. So I checked if mine was old enough to jailbreak (Nintendo patched the exploit out of the Switch about a year after it released) and, lo and behold, it was.
It wasn't easy jailbreaking it. It took several hours over 3 days to do it; I would make some progress, then hit a roadblock I couldn't figure out, so I'd stop and come back the next day. I'd get a little further, hit another roadblock, and repeat. Once I managed that, I ripped my (small) collection of Switch games and played them on Ryujinx. Now that I could finally play them on my laptop whenever I wanted, I actually had a desire to play them and managed to get through BotW in January.

Then I figured out how to jailbreak my Wii (which is pretty easy, I recommend everyone do it to theirs), so I could rip those games. It can also rip GC games, so I didn't need to find and jailbreak one of those to do it.

When I learned of shadPS4 this summer and the progress it was making toward playing Bloodborne, I spent $400 on ebay to get a gold PS4 with firmware 9.0 so I could jailbreak it and start dumping PS4 games.

At that point I saw how much space all of the games I ripped took up on my laptop, so I bought a NAS from a friend who was upgrading theirs and set it up with two 8TB hard drives in RAID 1 and stored all my games on there. It's currently about 60%+ full.

Over Halloween I went to a used game store and saw they were selling a Wii U for $160. I bought it and jailbroke that as well and started ripping those games.

I bought an OG Xbox to jailbreak, but I need to open it up to replace the clock capacitor first. Otherwise it could leak and my effort would be for nothing. I just haven't got around to it yet.

I realized this was a passion of mine when I accidentally borked my PS4 and it would only boot into safe mode. I was 100% willing to completely wipe it and start the jailbreak from scratch so I could keep doing it.

All told, I've ripped about 400+ nearly 600 games (I finally counted) in the past 15 months, spent dozens of hours ripping them, and have zero intention of stopping. I only think about how I can keep expanding my collection. Right now my next consoles will be the 360, PSP, and Vita.

Edit: rephrasing and adding a little more info