How does one even live like this?

You suck all the dopamine out of something and move on leaving the drained husk of your former hobby behind. Hopefully the dopamine runs out before you put money into it.
I swear as soon as I put money into a hobby, I lose interest. I got a guitar I can't play, a hackRF I can't be bothered to relearn, a box of half built eletronics, an unknown amount of Raspberry Pis and Arduinos with no purpose...
- Yeah I got into lockpicking a few years ago, figured out how to pick all the random master locks i had lying around the house, and immediately after spending like 250 dollars on some specialty, hard-to-pick locks, I lost interest. Still keep my lockpicking set in my car in case anyone locks themselves out of the house or something, but the dopamine i got from picking those first few locks is gone. On to the next thing.
  
  This is something that has always interested me but I've never tried. Any recommendations on a set of picks to start with?
  
  Same, I have a few locks I don't have the keys for and even broke into my friends car for them once.
  Im not good at it but I can atleast pop open cheap locks no problem.
- No wonder I have a ton of cleaning supplies and a dirty home.
- But I got so much Warhammer that needs painting! I have to like it or Shame Mountain won't erode.
- yunohost is good at being set and forget for RPis that sit unused. I still haven't got around to setting up paperless-ngx but I've done the rest and it is useful…
  Now don't ask me how long it's been since I said I'd set up a NAS
  
  as a linux enthusiast and server hosting nerd myself. I bought like 400 dollars of hardware, installed fedora on it, immediately proceeded to not like fedora very much. And then it sat for about six months. On a whim i heard about debian 12 releasing, which had a new enough kernel for proper QSV support on modern intel and i immediately set it up in about a week or two, now using containers and relatively well organized file structures.

As a person with no diagnosis of any type, I too feel confused by people only having ‘a few’ interests and hobbies. If my time were not so finite, and I had the financial means, I’d be pursuing a lot of random things
- Every night after after I just spent 5h with a new hobby, I really dislike the humans need to sleep.
  I am aware this sentence is broken but I don't wanna spend the time
  
  If we needn't sleep, capitalism would have made sure you have to work 20 hours per day.

I find the world to be crawling with interesting things to learn about. From electric plugs, to coffee, to how computers work, etc. It always drives me insane that the average person doesn't seem to be remotely interested in learning much about how and why the world works..
Didn't know it could be an ADHD thing though.
- That's why I love technology connection guy, I can just skim through his list of videos and find some weird things to watch about some random tech.
- electric plugs
  I thought that I was the only one... But it makes sense that other ADHD folks would too. Have a favorite plug? Mine's the CEE 7/4 (Schuko). It just has a lovely symmetry and thoughtful, safety-conscious design.
  
  The UK plug seems to be the best engineered one, I'm partial to the French one, along the Schuko.
  
  Ok, I had to look at this and I definitely agree. It's much better than the US Type B plug which I'm always afraid I'll short out when a random piece of metal falls on it.
  
  at the moment i'm partial to andersons, wonderfully versatile, modular, and scalable. You can get them ranging from itty bitty baby connectors, to big chungus giga connectors.
  It's a very nice design. I don't like plugs, i think they're all bad tbh.
- Hey I think I should get tested or something. I'll make a phone call.... Eventually

I prefer the term "renaissance man".
- A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
  Robert A. Heinlein

My ADHD interests: intensely researching a topic that has no prospect of financial reward and wanting to talk about it to people who don’t care
- What was your last one? I lately fell into the Esperanto rabbit hole.
  
  Not OP, but TTRPGs. Started after I finished BG3, and talked my friends into playing DnD, with me as a DM. Knew literally nothing, and hyperfocused for months learning as much as I could.
  I've prepared a 70 page document for my players detailing every one of my 6 homebrew classes, 20 subclasses, 15 origins (races don't make sense in the setting), and some lore about our ASOIAF campaign (I could keep going for hours about all I've homebrewed).
  We're all ready and rearing to go and I'm kind of... Already over it. I'm homebrewing vampire bloodlines ala dragonborn lineages and wild magic radiation and mutation systems on the side but those don't make sense in this setting, and it hurts.
  Edit: the worst thing is, I do have people that would be interested in those homebrews, but they're my players and I don't want to spoil them!
  
  Conlanging is great for this because you can make and abandon basic sketches of languages forever.
- Don't forget waking up a month or two later and realizing that you no longer care about the subject you've been hyperfocusing on and now have no idea what to do with yourself until the next hyperfixation shows up.
- I think what bothers me most is having no one to talk about things with. Like, I just made this cool thing! Someone ask me about it!!
  
  The only person I have to babble at has level 2 autism and can only process a finite (and very small) number of words per day before she combusts 😭

Yup, that's me. Only have a handful of active interests at a time. But a couple of those are free floating interest slots that I'll swap out every month or few as I really dig into something new. And then everything else gets moved into passive interest territory, where I'm not seeking it out but can still relate or engage if it comes up again. So that's how I live with it.
- Same for me. I actually have so little money that I barely do anything anymore but I still am interested in a bunch of stuff just unable to actively do it since I have little time and no money.