I'm not big on saving electricity at all and I'm trying to decide whether to select Mac's “Put hard disks to sleep when possible.”
What are the pros and cons of doing so?
For example, can I expect the hardware to last longer by keeping the hard disks on 24/7 versus putting them to sleep?
I'm using MacBook Pro (2017) running Sierra (10.12), but question is also interested in other (future) versions.
And why is “…hard disks…” plural when there's only one?