The thing that has been lost in the mad dash to 3D (not, mind you, that I am denigrating 3D) is that drawings are schematic representations of a design. A model needs to be 100% accurate, but a drawing needs to read clearly. This means that out-of-scale view are often needed. Trying to see (say) a .002 inch "step" in a part on a drawing will not happen -- yet everybody in the combined 3D/2D world seems to forget this.
However, as someone who started drafting with a ruling pen on linen, a clean, well constructed drawing is still the means by which the designer communicates his intent to the shop.