Aden - For many of us, some topics can be simply too sensitive for us to venture into. I know for me, there are some topics that I read that I can't finish reading because they invoke memories of things, and I hit the back button. I'm not saying that's the case with any particular one of yours, just ones I've seen from time to time.
Other times, my emotions are just too raw to respond, it's all I can do to simply sit and read, let alone try to compose a response. Maybe it's because I'm a "newbie" to all this (i.e., recently disclosed) and I haven't learned how to get a grasp on all these things I'm feeling.