I'm not saying this can't be done digitally, but it's not the norm, nor is it digital's strong point.
Digital's strength is in democratization: everybody can do it, and with tools like the iPhone with it's PS app; nearly everybody will. From what I've heard 5mp phones are coming soon.
In art there is value in doing things that others can't or won't do.
Automation is scalable but that beg's another question.
Why do I print by hand with an enlarger?
Because I can and do intend to create a fresh a interpretation each time. I don't resist the urge to "let each print find it's own personality".
I do resist the urge to create exact copies over and over and over. That is the antithesis of automation and digital technology.
In a world full of copies, it's nice to have something unique.