Thanks very much, everyone, for your thoughts!
I've used this assignment of "free-form" journaling in many classes before - it has almost become a standard element of my teaching. With every new group of students, I worry at the beginning that not everyone in the class will understand or appreciate the journal project - some classes catch on quickly and really enjoy sharing their thoughts this way, but others feel shy and confused and don't know what to say. I can see that you are most definitely in the first category!
I'm writing to encourage you to continue responding in such an open, thoughtful way and not to be put off by prompts that may seem less interesting than others - after all, it is not possible for you to have equal amounts of ideas about everything.
Keep writing - and reading, of course!