...if spinning rust disappears from the market!
Harvest 'em while you can. Get a crate of dead drives from the local recycler, and strip all the magnets. You'll be telling your mystified grandkids about the glory days when incredibly-powerful magnets were just free for the taking, for anyone willing to wield a screwdriver.
About 2 years ago, when I started putting 480GB SSDs in things, I commented that I'm probably never gonna buy another spinning drive in my life. SSDs are at the point where they can meet my entire workstation need, with the large archival backup stuff still satisfied by spinning rust, but I said by the time that array needs replacing, 2TB or 4TB SSDs would probably be affordable.
Here we are 2 years later and I have a 2TB SSD sitting right here, and if this crash happens, I'd have no problem buying a handful more next year, right around the time I fill the array...
It's happening!