Guilty of not wearing a seat belt.

So, its Saturday night and I’m sitting here nursing a whisky and watching inane videos on Youtube, each with a strong social justice flare.

I found a clip of two police officers, having pulled over a Range Rover owner, kicking and beating in the windows. Apparently the driver had sped away from the police having committed the crime of not wearing a seat belt.

This is where I get confused. If I were to drive without a seat belt, knowing full well the risks of not wearing a seat belt, and I crash and go through the windscreen then the victim is myself. I know that the seat belt would have restrained me in the seat, and other than a facefull of airbag I might have got away with a few cuts and bruises. So, if the Police exist to serve the best interests of society, why would they punish me for committing a crime against myself? Is there a good argument I’m missing here?