When you have kids, you will realize just how often they fucking wait until the absolute last minute to do anything.
So we are trying to make sure everything has been taken care of and a low level of stress by the time you leave the house.
By the time you have your own kids(assuming you do), you've also likely already experienced what it's like to miss a flight because traffic/flat tire/ had to go back because something important was forgotten/kid had to go to the bathroom, etc... And you are doing everything in your power to prevent that from happening.