But I think that in five years' time you won't be using RAID; nor will most people on this board.
Since devices have a tendency to fail once in a while, RAID (redundant
array of inexpensive disks) will be a popular option among those of us who care for our data.
What "most people on this board" do now or in five years is pure speculation, though.
Sometimes there are other parts than the actual storage bits of the drive that fail, such as the control logic, and it would be strange if that couldn't happen to an SSD with approximately the same regularity as in HDDs.
Then above is an image of a controller chip that lost its magic smoke (you know, the smoke that's inside all electronic components, and when let out leads to immediate failure ). If that disk hadn't been in a RAID, then the data might have been unrecoverable.
Fortunately, harddisk controller cards are actually user serviceable (if you know what you're doing), so I managed to save a long rebuild time by getting the card from a faulty disk with a working card. I haven't seen SSDs which appear to be anywhere near as easily fixed.
You are of course free to gamble that your data will be just as safe without RAID as with. I won't. And I'll still be making backups.