I complain about my health. That makes other people uncomfortable, I know. We're not supposed to talk about our health in this culture. For one, that's something personal. So personal that we even protect it by law with doctor-patient confidentiality. For two, we don't praise weakness in this culture, and admitting health problems is doing exactly that. Or so it seems. But for someone who is chronically ill, it's a little different.
See, if I were you I'd be complaining about my job, or traffic, or stupid people I have to deal with on a regular basis. We are a complaining species. But I don't have a job or a commute and the number of people I deal with on a weekly basis is small. I deal with my health. That's pretty much all I deal with. That and doctors. I'm complaining about what I know.