LOL!
For big losses (AFCCG, SBs, the 2005 Div loss vs DEN and 2010 Jets) I go through the 5 stages of grief. (Denial, Anger, Bargaining, Depression and Acceptance) That all happens over a day or two after the loss.
I mean, just because I am thankful and appreciative of the team's success (especially after enduring that hell in the late 80s and early 90s) doesn't mean it's OK to just shut off emotions after a big loss and create my own happy place. Life doesn't work that way- nor should it.
We all invest time in following the team and watching the game because we care and it's fun.
If they win Sunday, its jubilation.
If they lose, it sucks but life goes on and you look forward to next year.
Thats what being a sports fan is all about.