I mean, different people prefer different things, but there are plenty of high end watches that's square/rectangle, even though circular ones are more common.
When it comes to watch design, circle != automatically good looking, in my personal opinion, the Moto 360 is very cool for being circular, but the casing itself looks like one of those $100 dirt cheap Movado-lookalikes that you can get from an outlet mall.
Those are all renders of AppleWatch (the initial Moto 360 renders were equally fantastical). Are there bystander photos of the working AppleWatch models that look as beautiful as the renders? I'm interested in the cheaper plastic model in particular as that's likely the one I'm getting — and the price makes it a fairer comparison to the Moto 360