In my opinion, Sundays are for far more than just church. It's for doing things that you are too busy to do during the weekday, like painting your toenails:
Or trying out new outfits:
Or my personal favorite, homework that I left to do till the last day:
In reality, Sundays are meant for cherishing. You know that tomorrow will bring school or work, so you try to grasp onto every ounce of it that you can. You add a couple of extra words into your prayer, you hug a little tighter, your "I love you"s and "see you tomorrow"s seem to mean a little more, linger in the air a little longer.
Sundays are meant to be enjoyed.