Face to face is not only unnecessary, but often counter-productive. You aren't likely to just already be at the same place, so one or both of you must travel to the agreed upon meeting place, just to deliver the bad news. It also often forces an unwanted and pointless conversation, and draws out what may be a painful subject for both people. And this assumes that it goes well- others have mentioned the risk of violence, extreme emotional distress, etc.

I (generally) oppose ghosting, but it can be done remotely.