Anyone who has used a computer for more than a few years has had problems with a hard drive. When solid state drives become main stream hard drive crashes will dissapear.

SSDs offer a couple advantages over disk-based drives: they're lighter, consume less power, and are more rugged, making them ideal for laptops and mobile devices. They are also more expensive, but the price gap is narrowing as flash memory becomes increasingly cheaper.

Report: Seagate planning flash-based solid-state drives

These devices will not alleviate the need for backup devices (it will still be possible to accidentally delete files for example) but they should prevent a large portion of data disasters.