Depends on if I care of not.

Phone: 3/10. I don't really care other than googling "how to turn off annoying feature".

Writing Software: 7/10. It's not beautiful, but it does one thing reasonably well and I finished it in an afternoon. Just don't ask me to write a GUI.

Writing Software for industrial machinery: I've done it for a living for more than a decade. Still rather skip the GUI part.