When you see the look of awe in your husband's eyes as he gazes at your new son, when you tug the striped cap from the hospital off to admire the soft hair underneath, when your daughter sees her baby brother for the first time, when you are all four together as a family for the first time, you'll want to record every single detail in your memory. 

Because each of those moments, and all of the other little ones in between, are invaluable.