I tend to have morbid fear of that happening and I freak out badly when it does and I don't even spend more than a day ordering in new parts to have it fixed up as soon as possible. My memory is shot, my brain spills so my poor barge's storage system becomes a place for my brain to store excess information. Hardware failiures have become like brain tumours to me, so sadness through PC loss is something I can relate to.
Thankfully I backup bi-daily to DVD but still. An interesting roleplay session or something held right before a DVD backup and the hard-disk fries is something never to be seen again, such great loss. Hardware and software boffins need to get together to create an invincible file storage format where data is never lost.