Business correspondence is defaulting to “Dear John Smith” and “Dear Jane Smith,” to avoid the whole question of courtesy titles.
The problem is that there is also a trend to default to a single name field. There are good reasons to do this, the main one being that not all cultures use the given name+family name system, and even if they do, they might not do it in the same order.
However, I still want to stick to traditional alphabetization sorting, and a single name field doesn’t allow for that. I have suggested adopting a “name” field for the entire name, and an “alpha name” field to indicate which name should be the anchor for alphabetizing, but that hasn’t proven popular.