Vim3d: Because 3d modeling software wasn't already hard enough to use.
Honestly if you want something in the spirit of vim for editing models, Blender already has a very confusing-but-efficient interface. (IE, pretty much everything is done via keyboard shortcuts that are optimized for using your left hand so you can keep your right hand on the mouse).
Super simple interface, and it's even written in Erlang.
However, for making static meshes quickly, and for doing UV mapping without wanting to stab yourself in the face, you can't beat it.
Blender:GIMP::Wings::Paint.NET
It doesn't do everything, but what it does do it is great at. Blender is just too baroque--much like the GIMP.
Meaning that you probably still can't read email in it, but it can already do conference calls. ;)