I don't baby mine, but I don't abuse it either.
IMO, Apple took care of one of the big potential sources of damage with the mag lock power plug. With my old PowerBook G4, I had to replace two of the power supplies because they got tripped over while the PB was charging. Completely mangled the plug on the power supply. Luckily, neither event did any damage to the PB, but that was the closest I ever got to damaging it.
On my new uMBP 13" the battery lasts so long that I only have to charge it at my desk, which has the cables out of the way. I can surf on the couch or elsewhere without having to worry about someone tripping over the power because it's not plugged in.
IMO, Apple took care of one of the big potential sources of damage with the mag lock power plug. With my old PowerBook G4, I had to replace two of the power supplies because they got tripped over while the PB was charging. Completely mangled the plug on the power supply. Luckily, neither event did any damage to the PB, but that was the closest I ever got to damaging it.
On my new uMBP 13" the battery lasts so long that I only have to charge it at my desk, which has the cables out of the way. I can surf on the couch or elsewhere without having to worry about someone tripping over the power because it's not plugged in.