I'm aware that flash cards can last a lifetime in an average digital camera, but as a substitute for a hard drive? If the amount of writing is not much more than a digital camera, well, OK, but the way some users (me) use a hard drive, I wouldn't think a flash device could hold up very long on that basis. They do have a limit on write cycles, while hard drives do not, other than eventual death after several years of spinning night and day.