Most examinations of CBDC paint a grim picture of things to come, mostly in terms of yielding absolute power to the central bank. As with any situation involving power, with good intentions you can do wonderful things, with bad intentions you can do equally horrifying things. In the Indian context, the latter is of particular concern, especially when one man can demonetise the whole country overnight on a whim.

There was a good discussion here on CBDC sometime back -

https://news.ycombinator.com/item?id=27805709