Re: Why this form factor?
Then it's not for you; it's not for me either, though my pockets haven't grown. But you should watch how other people react to it. For many, particularly women, a more compact phone that will fit into a small bag is desirable. I've only seen a couple of non-tech previews but the compact nature did seem to impress a lot of people and the folding away will probably mean fewer smashed screens. This has to be balanced with the unknown wear and tear of the folding screen.