Backups: Using a computer and not backing up is like driving around without car insurance. Unlike with car insurance, you aren’t legally forced to back up. And a lot of people don’t and sooner or later they learn.
One should have two kinds of backups:
Local, incremental like Time Machine. If you delete something important by accident or your hard drive crashes, you can recover; and off-site like Backblaze so if someone breaks in to your house and steals your computer and your external hard drive, you can recover easily… like Backblaze.
Note: no, iCloud Photo, Dropbox, etc. is not an appropriate backup. When your two year-old learns to delete stuff, all the deletions will dutifully be synchronized.
I’ve been using Backblaze to backup my home Mac mini computer for over a decade. Their software has been great and so has their support. They’ve saved me before. A few months ago the external hard drive on this machine crashed. Fortunately it was all backed up off-site.
I no longer want nor need a home computer, so I sold it. Then I had Backblaze mail me a hard drive with my whole backup perfectly encrypted. The whole restore process was seamless, fast, and free after I returned the hard drive they sent me.
Make sure you back up. I recommend these guys, and I’ll use them whenever I have the need again.