As I see it, the goal is to be able to version them, to keep them up to date and in sync alongside the code they relate to. I'm certain you can make as crap a

As I see it, the goal is to be able to version them, to keep them up to date and in sync alongside the code they relate to. I'm certain you can make as crap a diagram in a WYSIWYG tool as you can in code, and that you can be at least as careful and organised in code.