Quite possibly... but I guess we use the tools we're familiar with.
AWK is a compile-free language that can do most things, and is great for parsing text files (e.g. body dimension files).
PostScript is great for drawing accurate designs using line primitives. You've seen the sort of thing I can do with it (no names, no pack drill of course...).
Excel is good for the more interesting maths, especially the Solver when I can't figure out an analytical solution (e.g. designing the SqueezeBox angles, designing an SLCD).
I wouldn't necessarily recommend using any of these tools unless you're already familiar with them, but I have about 25 years experience with the first two...
SketchUp, on the other hand, is great to use, once you understand how it 'thinks'. I've posted a few pictures on BPL of designs I've knocked up in it; bivvy tent, Skins pack, finned HX.