I've been working with computers professionally since 2000 and there's one mantra I always use:
backup, backup, backup
Backup all your data, especially when it is essential to properly function in your job or life. Learn how to backup all your valuable data on more than one place because no single electronic device can be trusted entirely when you got a situation that requires a 100% accuracy.
It's also useful to point out that the iPhone Terms of Service specifically state:
Article 7: "(...) You further acknowledge that the iPhone software and services are not intended or suitable for use in situations or environments where the failure or time delays of, or errors or inaccuracies in, the content, data or information provided by the iPhone software or services could lead to death, personal injury, or severe physical or environmental damage, including without limitation the operation of nuclear facilities, aircraft navigation or communication systems, air traffic control, life support or weapons systems. (...)"
Source:
http://images.apple.com/legal/sla/docs/iphone.pdf
In short: I am as angry as you are, but Apple cannot be sued for this. They more or less warned us.
Message was edited by: Alain N.