I mean yeah, of course I know how people hold and walk around with these devices. I was being silly.

Everything you said about large hands rings true for small hands and the mini form factor, but instead of just looking silly it's a hinderance.

We need both form factors. What I don't think we need is the weird middle size (current regular iPhone size), but I'm sure that's probably the one most people actually want if they could only pick one.