Yet, for something so simple, it accomplishes a few things that are not so simple on a day to day basis--
1. We work together. We may each be packing a separate bag, but we have to coordinate, at least a little, to make sure all the bases are covered. We carry together, we load the car together, and once in a while, we even remember forgotten things for each other.
2. We plan ahead. Okay, it's really just a few days ahead, and we're not going to Mars, but traveling does require a little more planning than the flying by the seats of our pants that we do on a daily basis.
3. (And perhaps this is most important) We escape. While our bags may be full of schoolwork and work work, and while our devices connect us with pretty much everything we are leaving, as we drive away, we leave the every day of our every day. For a few days, we will be in a different place, and at least a little, in a different frame of mind. And sometimes that is exactly what a travel day is all about...