They are, however, fragile. Handle with care, and they'll take care of you too.
My daughter got snagged on the power cord to my Apple PowerBook G4 and pulled it onto the floor from the desk. It cost over $1,000 to repair it. I couldn't believe it. I love having a laptop, but kstewkis is right -- be very careful. Of course, at $400, it's cheaper to buy a new one than pay for a $1,000 repair.