Keep in mind that hard drives, big or small, solid state or otherwise, are not intended to be perfect. They have a known failure rate, and even though the manufacturer knows that some of their disks will fail, they only know this on the level of probability. Disks are made in batches and the failure rate of disks within a batch are estimated as that is part of creating a warranty for the drives. But disk failure is not the only cause of data loss.
For those of you who think I am less creative because I worry about such things, please go fuck yourself. Thank you.