Does complexity require intelligent design?

I'm not such a proponent, but it's not hard to see why ID is so sedutively compelling. Think about it - setting aside biological systems and living things for a moment, how often do you see complex, interrelated, high-functioning systems arise through any mechanism besides people putting them together?Now, of course that's begging the question. But its a difficult argument to refute - framed as simply as it is, the scientific response is so much more complicated that it fails to be compelling. A simple question demands a simple answer; audiences are likely to view a complicated answer as simply an attempt at a smokescreen.