If my 'basic' income was on the same scale as Zukerberg's, I'd be happy with that.
Many people are already getting what amounts to a basic income now in the form of state benefit however this causes discontent and resentment in those funding them through their taxes.
If we all knew we would get a sizeable contribution towards our living expenses it would certainly mean we could devote more time and energy to matters outside mere finance. There's a lot to be said of riches beyond money.