In I,Robot, Will Smith prefers to drive himself because he doesn't trust AI. But we are moving towards self driving as it would be more safer. Would you trust a calculation more if it was done by hand using log tables? Having vehicles allowed us to create sports like dirt bike riding or monster truck racing. Yes something is lost but something is also gained. We move up the layer of abstraction.
That is not the same situation. Writing is a thing we do to communicate with other people, and to engage our own thinking. It's creative, it's exploratory, and it's a human-to-human practice. It is a top-level abstraction. The only higher you could possibly go is beaming your thoughts directly into someone else's brain.
Also it irks me to compare writing to a calculator's log function or a self-driving car. There are absolute correct/perfect outcomes in those situations (the log function produces the correct number, the car drives you to your destination without injury or unnecessary danger). That is not the same for most things AI is attempting to be used for.