I would say the latter two. I find no humor in it at all. I would add discouraging or disheartening to your list though.
For a while I *was* mildly amused to see conservatives doing the very things that had appalled most of us who remmeber what the "original" conservative goals were.
After reading this forum for the last year or so, I'd say that "disheartened" describes how I feel very well.
I don't care what Mary Cheney does with regard to having babies; and frankly, I am jealous that the Cheneys are going to have a new one!