[penagwin]

Well like the others said, bokeh != Depth of field. That said even if you removed all depth of field (everything is in focus somehow) it would still be missed.

Depth of field is incredibly important for managing a viewers focus. Imagine a picture of a coffee in a coffeeshop with the background out of focus - you can clearly see a coffee cup. That same photo but with everything in focus will be much more confusing - what should I be looking at, it's too busy, etc.