I didn't see it coming.

Could someone please explain to me why I am so damn shocked that Katie is divorcing Tom?  I feel like I was blindsided.  I have no idea why I feel anything at all about this couple.  They've annoyed me from the beginning, but for some reason, I really thought they were going to stick.  I have no idea why.  And I have no idea why I'm glued to People.com in order to get my updates.  I'm a little sick in the head.