Almost all of my design requirements are given in millimeters, not points, pica, or any other classical measurement. I design for board games, and the printer's specs always list their requirements in terms of millimeters of margin and bleed, not points and pica.
I'm making the jump from doing my layouts in Illustrator (which is happy to think in mm) to InDesign (which everyone assures me is the best program to do layouts in). But InDesign's insistence on converting every measurement I put into it to being in points and picas is wrecking my workflow.
How do I convert InDesign to defaulting to measuring dimensions in millimeters rather than points and picas?