I see it as human beings barely can take care of this earth, without destroying each others. Honestly I do not believe a "digital clone" of a human being will be any better.
If there is one thing I believe will totally destroy planet earth and human beings, it is use of AI in everything
I think differently, for the moment you are correct but in a fairly far future computers (probably something along the lines of a fuzzy quantum AI) should be capable of analysing the minutiae and probabilities needed to do the job better than humans.