Today, I only charge my Macbook Pro at my desk, where there's no danger of accidental cable-yanking. A full charge easily lasts all day, so when I'm out it's never actually connected to anything.
The aluminium unibody construction and solid state drives also make it a lot more sturdy. So when it does drop, chances are good it wont actually break.
For these reasons, I don't think that Magsafe chargers are necessary anymore. And considering how expensive replacement Apple chargers are, I'm happy they're moving to an open standard!