For movement I would take something like a HOTAS over keyboard. For example in games with multiple movement speeds finding the right speed is rather cumbersome on keyboard because the key press is an on/off and not a scale.

Similarly on keyboard movement is restricted to 8 directions. If you need to move in some other direction most people actually use a mouse to compensate for the lack of movement options because it's too cumbersome with a keyboard.

There are benefits to using keyboards but there are places where you can use something better. Analogue input simply gives better movement options.