Traditionally, when drafting text on technical drawings by hand we would use either letter stencils or write the text directly onto paper. When doing so, we would make an effort to best align the text with existing geometry such as lines, other text etc. We may have even used a ruler to improve the alignment.
Then, we started using software such as AutoCAD, and writing text became a much easier task. We were now able to access spot on accuracy and we could now align the text insertion point with the start point of line geometry. Naturally, this made us obsessed with accuracy!