Not wearing a seatbelt in accident could be argued increases the cost of your healthcare treatment (or possibly reduces if you go too fast). In same vein as tha

Not wearing a seatbelt in accident could be argued increases the cost of your healthcare treatment (or possibly reduces if you go too fast). In same vein as that insurance example. Consuming drugs - what about blowing pot smoke on kids playing in the park or walking across the street? Leaving used needles scattered on the ground? What about smoking pot with a friend? What all conditions must be OK for that friend to co-smoke? We can come up with more or less obscure but real examples all day. That's not how laws should be designed.