This is my beef with the vaccine as well. Too fast, not tested long enough - that's why I'm scared as well. Several colleagues are hesitant as well. Others will get it as soon as they get the chance. I personally hope for STIKO recommendation soon. It might come out before it's my turn anyway. I'm a health care worker but usually not as front line as paramedics, nurses or ER doctors. There are some exceptions though.
However, I've seen too many people with severe COVID at the hospital and it can hit any age group so I guess despite all my mulling over about complications when it comes to the vaccine might be academic anyway, especially with infections rates soaring. I'm absolutely convinced that many people will change their minds when in January the X-mas and NYE cases are going to flood the hospitals.