Jeez, you are the optimist.
Why bother.
As to sex laws, the US is still pre-Jurassic, hopeless, and controlled by the weirdest assortment of brainless corporate, political, opportunistic, religious, and other special interest monsters that ever walked the face of the Earth.

Toynbee - he was the historian, not the linebacker - suggested that few great civilizations make it beyond 200-300 years because they start f**king up badly after peaking and destroy themselves.

A Nation that puts up bad choices for higher office decade after decade is doomed to mediocrity, corruption, greed, and ultimate failure. It is so sad. BTIMBW.

Have you ever been through an effort to get a state legislature to make an intelligent progressive reform? You'll never see as many dickheads and morons as there are voting in state lower house legislative bodies. LOL

My f**king collie is 7 times smarter than Strom Thurmond and Jesse Helms put together, and has a lot better aim when taking a piss.

...for decriminalization rather than all-out legalization.  Why?

The only reason you could get our current government structure to completely legalize it is for the taxation, regulation and public-health aspects.  I strongly doubt that legalization would mean that indys would continue in a legalized fashion - it would be too hard to police (as it already is), tax and oversee.  Legalization would mean brothels, with licenses, tax stamps, income tax record-keeping (yes, most providers pay income tax already, but I'm talking about a tax withholding structure similar to what tipped employees such as waiters face today), required frequent health checks of the providers overseen by the public health department, etc. ad nausium.  And most likely it would require some sort of record-keeping on the hobbyists by the establishment, at least under the guise of public health safety (if a provider came up HIV-positive, the health dept would want to know who she's seen recently.)

Decriminalization, on the other hand, would take the political and other pressure off the police to waste time harrassing the quality indys while continuing to expend their efforts on nabbing the rough pimps, cutting off the organized-crime aspects, and keeping the streets clean.  A win-win situation.