until you spill the hard earned 10 ounces of breast milk you pumped in your car at a conference in Tulsa today all over your kitchen floor in an attempt to transfer from collection bottle to freezer bag, then collapse to the floor in tears watching your hard work (not to mention missed presentations as you were in your car hooked up for all the grounds workers to see) spread across your sloped tile, only to be non-comforted by your babydaddy who suggests that next time you should be more careful. Seriously, it's the best.
But, this is why I do it:
Also, fear of social ostracizing. No, really it's money saving. Formula is expensive, yo!