Earlier quoted context omitted.
> but I think one should just embrace it and say “my hobby is collecting guitar gear That's something I noticed with a lot of people in my circle and 3d printers. They don't 3d print for their hobby. Most of them have 3d printing or even 3d printers as their hobby.
It is not cost effective to buy a 3d printer if you 3d print only when you actually need a 3d printed part. That is the main reason. You buy/build a 3d printer only if you want to tinker with them. Otherwise you just commission someone to do it or use the local fablab.
Having a 3d printer now, I can get a half dozen iterations on something done in a day and compared to a single iteration per day from the library. So if you're designing your own parts and can't draw them perfectly first go, having the printer is huge.
Replacement battery covers for remote controls. If I value those at $200 each, I've broken even.