I think this is one of those philosophical questions where there CAN be a middle ground. There was an unfortunate woman on TV the other day that had a mental disorder that manifested itself through hoarding. She had so much stuff in her apartment she presented a safety hazard, and when she couldn't clean it up after multiple warnings and the help of others, she was out on the street. What blew me away were the bins of unsorted clothes, literal trash, and broken trinkets stacked floor to ceiling. This is the one extreme.
On the other hand you have those with the bare minimum. True minimalists. I'd argue that if you have more than one vacuum cleaner or more than one washer, you can't fit this category. Maybe even owning a washing machine is extremem since there are laundromats.
The problem with minimalists is that they are continually purging "un-needed" items, then they spend time and money to replace said item when they need it, either driving to a store, or scanning eBay. This introduces a whole host of ethical questions about disposal and pollution.
Someone mentioned keeping something around that's broken instead of pitching or donating it is lazy. I'll play devil's advocate and say that tossing that thing out is the lazy solution. Like using paper plates to avoid cleaning and storing dishes. There's no guarantee the replacement (should you ever find whatever it is you pitched) will be the same color, equally prestine, operate as well as the old one, not have yellowed plastic, etc. Maybe someone stripped out all the chrome plated screws on your new find and the cord is ratty, and while the one you threw out had a bad motor, the rest of it was mint.
Lots of AW members have spare parts stashes and even parts machines and their homes are spotless. I think the trick is following through. Either salvage, sort and store, or strip what you need and recycle the rest. I doubt I'll ever find an RCA CT-100 at a yardsale, but if I came across the control "pencil box" at a sale, I certainly wouldn't pass it up. Even if I never own the set, I'd like to feel I'm doing my part for the next owner/restorer/collector.
If you have the space, the organization and the interest, why not do what makes you happy?