Hahaha. I had the same problem with my family. I was constantly amassing computers, and they wouldn't understand because to them they're "old, and useless".
Particularly after I discovered Linux, I saw more value in a lot of computers people didn't want.
My ex was an enabler of my habit though. She worked for a company that designed fancy kitchens/bars for hotels/restaurants/resorts. They had a contract with Dell, and would just throw away perfectly good workstations that were 3-4 grand when they were new. So she asked if I could have them. I got several Dell Precisions with Xeon CPU's, 2 Nvidia Quadro GPU's, and a Radeon FirePro GPU. And one of them had 16GB of ram.
This Dell Precision has been my main computer for over 4 years now, and I would have been lost without it.

But I have boxes of fans, cpus, gpus, ram. I even have a 2005 Phillips Cable/TV-Capture Card somewhere. If in a pinch I could build a computer.
More recently I've been obsessed with getting the small single-board computers because they make excellent servers with low power consumption.