Hi ladles and gentlespoons, Here is a general wonderment-kinda-question... Today I was sorting through a couple of old hard drives I found in my cupboard and came across some old back-ups of my 2009 MacBook. No longer needing or owning an '09 I promptly removed the backups. This then got me thinking, I should probably backup my rMB. Then it annoyed me as I haven't got the USB port to do so AND THEN it struck me.. perhaps there's no need to back-up anymore and perhaps thats where Apple is trying to push into with the lack of ports (that and making dollar dollar bills from all the dongles and adapter y'all be buying). Long story short; I own an iMac 5K max-spec, that I use as my daily driver. It does all my work and I have it continually backing up to my Time Machine hard drive as I'd hate to lose everything in one fell swoop. I own the rMB too, which I use on-the-go for browsing, typing up articles and doing some research. Literally, that's it. All files on my iMac and rMB are triple-synced to Dropbox, personal server & Apples iCloud Drive. Every Application I own has the original DMG saved onto my server should I ever need to reinstall it. My photo library is backed up to my server, and I use iPhoto Cloud Library. In theory, I should never have to backup my MacBook as everything I do that would need saving, is already on the various cloud services, so should I drop it in a pond or run it over or just destroy it for whatever reason, my files will be on the cloud and on my iMac via iCloud Drive? Back to the beginning; theoretically I should not need to backup to my Time Machine on the rMB as all my files are already "backed up" - if you disagree, what am I missing that TM backs up, that I/the cloud is not? (Save for the Mac preferences).