It was something I never thought about until I lost my first drive. And agreed on human error, I killed the second drive by running the second scrub.

I start with 2 new, "reliable" drives.

After a couple of years, I replace one drive with a new one. Keep the removed drive to use for offline data backup.

Run until failure or 5 years, which ever comes first. Then replace the oldest or failed drive with a new one. Wash, rinse and repeat.