Because I like them. It's kind of like hanging onto a fine wine that you drink on special occasions, anniversary's, Friday nights, but if you drink it every night you won't appreciate it as much.
That's cool, I get it. I love looking at the super clean low mileage restorations. They are very nice.
I just enjoy driving mine so much that I practically get a boner every time I fire it up. Never gets old tooling down the highway gripping that pencil thin wheel, with that rumble behind me, looking out over that old school hood. If I ever owned a car that I was afraid to drive very much, I'd still have to have a second one to drive.