its because you don't have time and energy to design useful or interesting projects with stuff that you store because it looks cool (magnetics for me).
Also another part of it is as you progress into the hobby you learn about what quality is and you realize alot of stuff you pull out of cheaper equipment or consumer stuff, is difficult to design in if you have high manufacturing standards or is simply older technology thats not sexy anymore.
another part of it I think is that you forget what you have or you get it faster then you can organize it then you get a confusing sprawl that causes subconscious anxiety to be around.
I had this in my basement, tons of containers filled with random shit, like a box with a few screws, a boiler part, some electrical crap, a screw driver and saw dust in it. When I sorted it all out by category I kind of got an idea of what I can do with all this stuff and it actually stored much easier.
Another thing is bags. I try not to keep bags like the ones that came with screws or any kind of store packaging in anything I buy unless its something really weird (like a replacement sink). It stores weird and is difficult to clean and it makes unpleasant noises when you move it.. don't rely on the manufacturer to figure out a good storage solution for your home.
I kinda go for this rule;
if I feel that I need to have a 'good day', good sleep, good mood, 'stars aligned' to get the energy to clean the storage area or to retrieve a component, its done wrong.
if its a easy process that I can do even when I am sleep deprived, irritated and tired, that means the storage is implemented properly.
I swear the stupidest shit has prevented me from starting projects before, like I don't want to deal with a dusty or broken container because it might spill out, or I need to get a stool to reach something, or I need to totally remove everything from a storage box to access something I want then i need to reload it then I need to climb up with it on a shelf. Or I remember that I will need to wash my hands after i reach 'into that pile of shit'. Then its like nah, fuck this, movie.
it seems fine when you are in a good mood and everything, but I noticed that when projects go on for a while you get kinda cranky and irritable and any one thing fucking off on you leads to abandonment. On the other hand if everything is done right, you can finish that sub assembly you did not really want to do then get super excited about the bigger project which is within reach now, because you got rid of a knot in your head and got a little boost of happy chemicals from achievement.
I find its true for house work too, I get a basket and sometimes I organize all the tools, fasteners, whatever else in there, then just leave it alone in the correct area for a while, maybe a break, maybe the next day, even if it was just 5 minutes of labor, however long it takes me to get out of 'organization/acquisition' mode vs implementation mode.