[crote]

> OpenSCAD isn't perfect, but it's so plainly obvious that code-based CAD is a better idea to me that it sort of bothers me that it's not the default.

Same reason people use Adobe Illustrator or Inkscape to create SVGs: when you're creating a visual end product it's often easier to use a visual workflow. You already have in your mind what you want it to look like, so you just need to draw it and you're done.

When it comes to specific dimensions it's often more convenient to use parametric modeling and integrated repeat features. Automate the repetitive and precise stuff, freeform draw the rest.