Sadness & Sundays

So, tell me friends is it just me or are Sundays just sad days overall? I don't know if what I feel on Sundays is truly a sadness or a loneliness but it is definitely something. I guess the best way to describe my feelings on Sundays is melancholy. My day starts out great...I am first up (the house is quiet and dark, ahhh) with a hot cup of coffee and the news. I really enjoy spending most mornings this way, don't get me wrong I love my family I just like to get my thoughts together before I have to deal with everyone else's. Church comes next, which I always enjoy thoroughly and then home for the day. Today consisted of a Bears game and food and spirits and good company, but what happens after that? The Bears won by the way and the house was filled with joy and enthusiasm, sounds great even as I write but please tell me why do I not feel great now? I don't believe it's because we are all back to work tomorrow, I like my job. I really wish I could figure this one out, but I can't do it alone and I am hoping for some feedback. Does anyone have an idea on why Sundays make me (or anyone else for that matter) feel this way?