Old adage of the bicycle cranks is that if you were to put a spike on the steering wheel, people'd drive a lot more carefully
tbf I also don't get the argument for personal safety. Pretty much any state lets me do a lot more statistically dangerous bullshit than that freely, why not this one? If there's other people in the car, sure, so you don't become the 100kg meat rocket wrecking everybodies shit but hey if you wanna die alone in a 20kph accident you just have fun doing that