Me either. But my appreciation for the great reliability my Apple boxes does extend into faith that it will always be so. Drives fail, power goes out. And once stuff is gone it is gone. Backup drives are so cheap, easy and fast that there is no reason not to do it.
How nuts would you be IF it went wrong? Remember that when you go into upgrades unprotected.
Edited to add: Actually there is one caveat to this: With the advent of downloadble apps and OS it's not as critical to backup the system as it is to make sure that your DATA is backed up. If you've got that covered you are better off than if you have nothing, but a full backup of system and data is a heck of a lot easier to restore than to reload an OS, download all your apps and then try to get your data back too. Like Harry says, when you've got a gun pointed at your head: "Well, do you feel lucky, punk?" =)
How nuts would you be IF it went wrong? Remember that when you go into upgrades unprotected.
Edited to add: Actually there is one caveat to this: With the advent of downloadble apps and OS it's not as critical to backup the system as it is to make sure that your DATA is backed up. If you've got that covered you are better off than if you have nothing, but a full backup of system and data is a heck of a lot easier to restore than to reload an OS, download all your apps and then try to get your data back too. Like Harry says, when you've got a gun pointed at your head: "Well, do you feel lucky, punk?" =)