Edit: so it turns out that every hobby can be expensive if you do it long enough.
Also I love how you talk about your hobby as some addicts.
Self-hosting apps / homelab
Getting used enterprise gear is not prohibitively expensive, but the electric bills balloon very quickly.
Knitting. Super cheap to start, you can pick up a set of needles and some acrylic yarn for under $20. But when you start getting into nice yarns and bigger pieces, you are spending hundreds of dollars on yarn alone for a blanket or a sweater. And you want nice needles in all sizes as well as all types (double pointed, regular and circular)… more hundreds of dollars.
Moral of the story is if a friend knits you something with nice yarn, please appreciate it. Lots of effort and thought went into it.
Just started crocheting, and I’m just holding myself back from buying all the yarn, it’s gonna get bad
My mom knits and she spends way more time unraveling thrift store finds to salvage the yarn than she does actually knitting stuff.
Coffee. I’m in a coffee producing country. It could be as cheap as grabbing a bag from the coffee institute (really good and cheap), a cloth filter and call it a day. Instead, I’m on my second espresso machine, fourth grinder, second portafilter set, and have all the doodads to make it just how I like it.
Board games. Things get expensive once you start collecting
I needed a new saucepan.
I’ve now replaced half my kitchen.
Data hoarding and self-hosting every service under the sun.
Surprised there’s no reef tank people here. Imagine spending $5000 on a 20 gallon fish tank - BEFORE spending any money on corals.
Ya it CAN be done for $50, but nobody does that.
I will buy a Ubiquiti edge router to move away from the consumer grade network gear, turned into just one more $500 server to complete my homelab cluster. Oh who am I kidding the homelab is never “complete”.
PLANTS, LOTS OF THEM
My grandma got me 3 ducklings in 2019 for no reason. 3 ducks don’t cost very much. The issue is, that she unlocked a passion. I now have 12 ducks. I want more, but I don’t have the money or space.
selfhosting/homelab. Originally started just using retired gaming PC parts to build a server. All it cost was the power to run the system. Years later and with more things/content I have, I just added a 5x 18tb hard drives and 3x 8tb. Just the 5 18tb drives was like $1500.
Started out with a raspberry pi several years ago. Got my feet wet with entry level, beginner friendly NAS prebuilds. Hunted for recycled computer parts. Now searching for and actively acquiring enterprise gear that is making a massive dent in my wallet.
Great post OP!
Selfhosting media
Gardening.
Containers are surprisingly expensive. And you need a lot of soil to fill them, which gets expensive too. Then it’s impossible to only buy the seeds you need, when there are so many cool varieties…