Personal liberty is all well and good when the consequences for ones actions lie on them alone.
If you want to remove the mandate that the medical field must provide care for all comers, stupidity and bad decisions notwithstanding, thereby leading to society bearing the cost of that burden, by all means... delegislate safety devices, decriminalize all drugs, etc. This isn't simply a money-generating issue for state law enforcement.
And here I thought society was paying bearing the cost of that burden now? At least the hospitals will claim they have to charge $12 for an aspirin to offset the costs of those that don't pay? Personally, if I get injured due to not wearing a safety belt, I will bear the burden. I have auto insurance that will cover a large chunk of the cost, and private health insurance to pick up the rest. If they both don't cover it combined, I'm still on the hook for the remained, chased by debt collectors, credit rating destroyed, etc.
How exactly do mandated safety belts help society as a whole? I'm not arguing whether or not they work. I'm sure they save countless lives. If it's all for the public well being, people die in collisions every day. Lets just set the speed limit at 15mph and be done with it. While we are at it, we can mandate that any shoes made on or after Jan 1, 2017 be safety toed, to help eliminated stubbed and broken toes in the name of public safety. That will continue to help our government protect us from ourselves.