I would say no if: - the effect is scientifically provable and quantifiable - the effect is tangible & physical (not emotional harm) - banning it doesn't vio

I would say no if: - the effect is scientifically provable and quantifiable - the effect is tangible & physical (not emotional harm) - banning it doesn't violate fundamental/constitutional rights So an example where I would say you should not be free to make the sub-optimal decision would be smoking in indoor public spaces.