Prohibition obviously yields some benefits.
For example, it provides steady employment for certain task-specific LEO's, quite a construction boom for businesses involved in prison construction along with an increase in taxpayer funded prison guard and administrator positions. Legal professionals have certainly benefitted, with steady business for defense attornies, and opportunities for ambitious prosecutors to further their careers. It's simplified our legal system by making the prosecuting attorney decide a criminal's sentence before a trial begins, instead of leaving such decisions to unqualified judges. The legal system has been further streamlined by eroding unnecessary hindrances such as protections against warrantless searches, double jeopardy, excessive fines, cruel and unusual punishment. Prohibition has made us freer and safer by contributing to the destruction of outdated notions, including the right to freely associate, and the right to keep and bear arms.