In many peoples' reasoned opinions, the "illegality" of prostitution and alcohol sales is up for debate (laws not withstanding). Heck, even past American presidents skirted the laws for the latter -- and probably didn't pay taxes on booze sales either.

EDIT: My point (to the downvoters) is that not all "illegal" activities are immoral, and that reasoned people could legitimately consider willfully defying & hiding their defiance as an act of freedom. Case in point: Tea in 1773.