Sounds like it could have been an accident, did you try talking to the guys involved?
It's like crashing into another car whilst driving along a road, these things happen sometimes.
Any age can donate, however the majority of the lifetime donators are made by people who are a bit older as they're the ones who are in full time employment and can afford to.
This is the third thread you've made asking the same question you've already had an answer to.
The joining and training process of the police requires patience, something that you haven't shown yet.