Libertarian do indeed believe that one has to be resposible for their actions. If a person is caught speeding then that individual has to pay whatever fine is imposed on him. If a person drives a car and is caught for D.U.I. that person has to face those consequences. If that person driving D.U.I. has an accident and the person with whom he has that accident dies, that person will be charged with manslaughter and if found guilty by a jury, will have to serve the sentence which is ultimately imposed. To say that libartarians do not believe in consequences for their actions is simply not correct. There is an obvious difference between libertarians and libertines.
In post #19
dustind says, "If your actions do not harm anyone else, 'go for it'".
But you say that if I speed or if I drive while intoxicated I can be arrested and have my liberty taken away. Granted, if I harm someone while speeding or while intoxicated, I should be punished.
But if I'm not harming anybody, why should I be arrested?
And if we can write laws which cover behavior that is potentially harmful, the why can't we write laws against drug use?