Sleep is for the weak...or childless. Lots of mothers say goodbye to their hours of uninterrupted shut-eye once baby debuts. And, even once a tot is sleeping through the night and has a sibling or two, it doesn't mean parents necessarily have time to hit the hay. There are only so many hours in the day and for moms juggling a career, family, and their children's commitments, burning the midnight oil can become routine. Do you long for sleep or do you just consider the lack of it part of parenthood?