I've seen considerable discussion of the longevity of solid state drives under conditions of use, but little about how long one will last if unplugged and left in the closet.
I'm addressing good quality flash drives, not cheap USB sticks, and assuming decent storage conditions.
It seems that over time they'd leak electrical charge and develop errors. How long is it likely to take before this becomes a problem?
I've found some variations on "I don't know" here: What lasts longer: Data stored on non-volatile flash RAM, optical media, or magnetic disk?