Clean, well formatted code is essential. I think we can all agree to that.
I work on a system that uses an old VBScript 4.0 implementation for scripting things the software can’t perform and to do data validation in particular instances. This system, due to its architecture, is limited to 60k characters per script with the ability to include other scripts.
To keep simpler scripts to one file we settled on keeping blank lines to a minimum, using comments sparingly once the script was applied, and tabs instead of spaces to keep the file size down.
I too have been guilty of cleaning up code I had to maintain just to make it easier to work with.
Formatting, down to the the type of characters used for whitespace formatting, is important and will vary by the environment.