There is nothing more terrifying than the blue screen of death facing you on your computer monitor or gulp, a hard drive crash. And you've not backed up your data recently, or worse at all.
I found Backblaze well over eight years ago and have trusted them to back up my data continuously. And if a file goes missing from my computer, or I hopelessly corrupted a file I can find it on my backup.
Backblaze works in the background backing up your files without you realizing its keeping you safe. You get peace of mind for an incredibly reasonable price. And if you have EHDs they can be backed up as well on the same account.
And for the sake of full disclosure, I am paid a small commission if you buy Backblaze from the above links or the one on my left Partnerships column of links. Even if you don't subscribe to Backblaze from my links, please just go there and do this.