Repetitive content is definitely something that has become painfully obvious to me as I got in the habit of posting daily "journals" through actifit. How can I make each day feel different and worth reading? I don't even post about interesting thought topics like you -- instead they are mostly just activity reports talking about the things I've done the day before. It does seem like my content with pictures of NYC subway art and street art receive more likes, although the comments are still few and far between. Food content also seems to be a fan favorite, but since I'm not eating out as much, I have a lot less content than I used to.
I think what makes content interesting isn't what we do, but what we think about what we do. It shows some personality and is more intimate. At least for me, I value people, not events.