The philosophical basis of the most fundamental laws in free, democratic societies is the principle of personal liberty. Each individual's right to exercise their own free will and make their own choices about how to live their lives is a foundational moral and legal concept, and drug laws are in direct contradiction of this ideal. Drug laws also violate personal religious freedoms: in some cultures and religions, drugs which are now illegal play roles in important rituals and traditions. Drug prohibitions were not a part of the legal text of the founding documents of modern democracies, and historically, global society survived and progressed for many years without any legal restrictions on the supply or purchase of drugs. In and of itself, drug use is nothing more or less than a personal choice, and in a free society, the law should not have power over the personal choices of individual citizens.
[P1] Personal choice should not be infringed upon. [P2] Using drugs is a personal choice. [P3] Drugs being illegal is an infringement on personal choice which should not be allowed.