Andrew an argument could be made that particle physics and cosmology are in fact in a very similar state - standard models defined by exquisitely measured parameters that really can't go much further, but with fundamental things completely unexplained - where do those quark masses come from ? what is the vacuum energy ? Some grand theory awaits .. but meanwhile we are running up against a brick wall. Contrast this with other areas of physics - quantum optics, extrasolar planets, soft condensed matter - which are still a mess, but at least there are still surprises ...