drive more
There is tax on petrol (gasoline) and diesel by volume purchased

eat more fast food
In various parts of the world there are taxes on sugary drinks, single use bags and containers

It's fairly reasonable to have these taxes to offset the negative externalities whether it's environmental or pressure on healthcare.

That's different than not wearing a seatbelt in which case you are really only endangering yourself.

Well if you put it in a wall and you go through the windscreen someone might have to try save you or break the news to your loved ones etc.

In America for healthcare you're mostly fine if you have money or good insurance.
In Europe/Canada unless you can afford to get treatment privately or It's covered by insurance then there are waiting lists and delays to get treatment.

In those countries if everyone is paying for everyone's healthcare which is probably an ethically good thing to do for society if done efficiently and fairly then some taxes on being stupid that can help fund better service are probably a good idea. Minimum alcohol pricing for example reduces liver diseases and other harm from alcohol.

I think if you participate in dangerous sports you should get adequate training and preparation for accidents. Maybe if horse jumping or surfing or whatever caused disproportionate costs to society then gear or training could be taxed higher but it wouldn't be in the same category as parking somewhere that could highly likely cause an accident or smoking or drinking or fast food. Things that society should discourage for the benefit of everyone.

the perspective is different between Europe and America and I don't think there's an exact right answer on social policies. I understand the libertarian reasoning of leave me alone and don't interfere in my life