True, they don’t, but if they are looked after properly, they can last a lot longer than a video tape. It is best practice to make backup copies of any digital media as there are a number of factors that can influence the expected life of optical media. We only use Verbatim media as this has proved to be by far the most reliable optical media we have used. It does cost a bit more, but wouldn’t you rather have your treasured material on a branded and reliable format.