How do you tell good design from bad design?

How do you tell good design from bad design?

I’d argue that it’s obvious to tell the difference between good and bad design. But if that was the case for everyone, then we’d enjoy a world full of excellent websites. 
I believe there are obvious visual and emotional indicators of good and bad design. Let’s start by comparing and contrasting the visual indicators first.


Solvm

How do you tell good design from bad design?