Is there a compelling reason?
edit: Also this page http://duckduckgo.com/?q=computer&v=d just seems like bad flow - "ERROR!". If I want to search for computer, I want to search for computer. If the results are not what I expect, I'll modify it. At least show the results in a standard layout every time.
The primary reason and goal of Duck Duck Go is to get you the information you're searching for faster, and with less mental effort.
This new view in particular does that by reducing the clicking back and forth between results. It pulls out good info from pages where it exists. Often you click to a page and then search for your terms within that page, only to find they don't exist or only exist in a cursory or unrelated fashion.
By displaying paragraphs of readable text, you should get a much better idea whether that page has what you want. And I hope that in some cases you won't actually have to click. The take a peek feature (hover over magnifying glass) furthers this hope.
Another way to look at part of it is we are saving you (at least partially) from the myriad of interfaces that exist on all the sites on the Internet. We pull out the good parts, via Duck It or Take a Peek, and standardize the formatting for you.