I write this post from the plane, on our way back from a much-needed vacay to Vegas for my husband’s 30th birthday. This was a kid-free trip, and while I knew we needed to recharge, I was reminded of the simple things that we used to take for granted – before we were parents. Sleep. Uninterrupted sleep that begins and ends when you say so. There is a tiredness associated with parenthood that is incomparable to any other cause of fatigue. Yes, you can be tired from a late night of partying, an all-nighter studying or an overnight shift at work. But the parent version of tired is different because…