If you don't take care of stuff, it won't take care of you. I do work with people who must torture their stuff - every cable is kinked or bent in some way, or fraying at the end. Some of this might be faulty cables - I've had a Dr. Bott ADC to DVI cable just fall apart after 3 insertions - but on the whole I tend to think it's how people treat their stuff.<p>On an Apple square supply for the lead to the computer rather than pulling it at an angle straight to the winding clips, you put a small loop in the wire right where it exits the block, then wrap it around. No stress on where it exits the block - I've had the same one in my bag for 4 years now. I've seen people who just yank that sucker in one direction as hard as they can then wrap it around, and yes, that will cause the wire to break there...<p>Also, it's worth buying an extra power supply as backup. Apple has kept compatibility with most things - the original 85W supply used from the first MacBook Pro will still work with the newest unit today.