Every dollar you bring in has a significant effect on your runway. While making a few K a month and making it early may be far from profit, it can change your runway from 12 months to 18 months and beyond. It can also determine if you get to call it "my" business or "the" business.
It is a tremendous feeling to get to the break-even point and with it the realization that you can now work on your startup full-time for as long as you want.