Re: The Usual...
@Snorlax and "If your shit is important to you. BACK IT UP YOURSELF!"
I agree that everyone responsible should be certain that important stuff is backed up but then again that is part of what they normally are paying IT support for.
Why not just decentralise everything and return to isolated machines without network connectivity? the answer is because it is too expensive in redundant hardware and limiting on team based working. Then add in that for security reasons that data tends to be centralised with controlled access against just taking the storage out of the PC along with all the backups and walking out.
If you do understand that you need to deal with the customers requirements then you are not going to work for long in pretty much any field.