I relate. I like working on my car for similar reasons. As others have touched on, you feel like you’re cheating the system when you do it yourself and save money. Very satisfying.

Congrats, I hope it stays fixed! I can't repair anything, but I support the movement in principle. I usually try to take good care of the things I own and buy things which with replaceable parts (think headphones) or things which are more ecological (think traditional wet shaving with a DE razor). Actually, come to think of it, I might try to repair my headphones. Something that can't be replaced broke -- part of the headband near the ear cups but I think I can fix it with tape.

I was able to replace a light in the bathroom with an energy saving led version and although the result isn’t perfect it gave me a lot of satisfaction knowing I had succeeded doing that for the first time and saved a few hundred to the electrician.

All the time. That and maintenance. I got so much joy from finally having the supplies to change my car oil at home.

I keep having better salaries in time. I noticed, I still manage to not save any money from one year to the next. Why? Objects require maintenance/repair/cosmetic care a lot faster than I can afford to keep replacing them. Buying something new feels profoundly shallow and ungrateful based on what good objects I have. Example: i had a xiaomi robot vacuum. Almost replaced it when I realised I'm better off replacing the battery (that's what I assumed was broken). For 20$ i extended its life for another 2-5 years. Respect for the object, respect for the time I spent earning how much it cost, and by extent, respect for myself and my life.