Editing text does not exclusively mean writing code or long documents. I and many others do a large chunk of casual web browsing, email, and messaging from iOS devices. Having better cursor movement to go back and fix a mistyped URL or quickly select a block of text from an email would be a huge improvement over the existing clunky behavior.
That said, I do not think there is anything wrong with using an iOS device for heavier text editing either. It is currently more inefficient than a laptop, but new interfaces may one day make it just as efficient as a traditional keyboard for text entry and manipulation.
Editing text does not exclusively mean writing code or long documents. I and many others do a large chunk of casual web browsing, email, and messaging from iOS devices. Having better cursor movement to go back and fix a mistyped URL or quickly select a block of text from an email would be a huge improvement over the existing clunky behavior.
That said, I do not think there is anything wrong with using an iOS device for heavier text editing either. It is currently more inefficient than a laptop, but new interfaces may one day make it just as efficient as a traditional keyboard for text entry and manipulation.