Sometimes it seems to me like everyone assumes I'm on death's door just because I'm diabetic. My current doctor isn't bad about it, but my previous doctor went way overboard on the preventative stuff. I've mentioned before about all of the cholesterol drugs he had me on. He even had me get the first immunization for pneumonia! As if I'm even close to being at risk for it! Had I known better then, I would have said no.
Another thing I frequently hear is that diabetics should always get flu shots. Um... Why? If we're in good control of our diabetes, there's no reason why we'd be more susceptible than anyone else. And even those who aren't in good control may not benefit from it, according to this article on why the flu vaccine doesn't work.
Just because you are diabetic doesn't mean that 1) you are susceptible to every little bug floating around, or 2) you need to buy into every single preventative treatment available to you. Don't be afraid to question conventional wisdom. After all, it's your body and your diabetes, and you know both better than anyone else could!