It allows one to finish a thought out completely before being interrupted, as if on the phone. And furthermore, the costs of postage would become obsolete. There is no need to send a letter and wait days or weeks for a reply such as our ancestors did in what seems to be a lost age. Nor is there any need to spend hundreds of dollars on phone conversations with missed loved ones as people do even now. Communication is the key to a civilized society.
Electronic mail can do just that.
Works Cited Negroponte, Nicholas. Vintage Books, 1995.