

yes as most service sleep, and time to spin them up is fast. Moreover some services continuously poll folders and avoid disks to sleep. Letting disks sleep the whole night is a good idea if not in use, this won’t shorten their lifespan.
In here it is .30 pro Kwh
my solution is not never have anything important on my computer, i have a dedicated gaming pc just for my flight simulator. And please just empty that damn mailbox, it is not a storage system for documents and it increase surface of attack if compromised. For the rest just air gap many backups of your most important data.
E.g. keeping your taxes report unencrypted at rest on disk is a dumb idea too or worst a copy of your ID documents.