well, this is a watch.
In the watch world there are many kinds of watches for many different settings, personalities, and purposes, not to mention the wearers personal sense of style. Some may enjoy thick, purposeful tool watches like certain Panerai, or dive watches from Omega, or a Rolex Submariner. Those watches tend to be thick and chunky, but certainly beautiful in a sort of rugged way. In short, they are watches that intend to be worn AND used. Remember, James Bond wears a Rolex Submariner in the books and now a beautiful Omega Seamaster in the movies. You can dress it down and hit the beach or dress it up and look dashing in a tux.
Then there are other sorts of watches, and some are exceedingly thin. There is a certain panache and elegance inherent in a very, very thin mechanical watch. Its certainly no different than the iPhone in that both require impressive engineering to deliver something that works, and works reliably, in a case that's as small as physically possible.
Having said all that, I see room for variations in the apple watch lineup, exactly as many watchmakers approach their business. Why have just one model? I see Apple producing a couple variations at least. Perhaps an exceedingly thin sort of 'formal' watch - that would be VERY Apple.
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then again, you're most likely not a watch person.