Rhuan,
Your idea is noble but too idealistic. Of course, porn pollutes the mind and soul, and gives an incentive for people to engage in bestial behavior for money. It legitimizes sick perversions. It is an affront to womankind.
But on the other hand, prostitution has existed for thousands of years, maybe even longer---performing sexual favors for tangible benefits, instead of sex as part of righteous procreation within the framework of a family. Prostitution was not abolished in ancient times, when Jews were much more righteous than today, when the Temple existed.
There is a commandment regarding a Jewish army going out to war. It commands the leader of that army to keep the army spiritually pure and righteous by removing all uncleanliness, specifically prostitution, so that the Spirit of G-d can dwell in that army, and that the army as a result will win in battle, with G-d's help. Note that the commandment assumes and accepts the existence of prostitution in general, and that it merely forbids its practice in specific locations and circumstances. This seems as a rather very lenient moral standard, especially for what is supposed to be a nation of priests and a holy people, but that's what's written in the Scriptures.
This tells me a great deal about what society's approach should be in general regarding smut. You cannot, you must not remove temptations from people, because this way you take away from them their ability to choose between good and evil. That is our entire purpose in this world---to make choices, which, hopefully, are the right choices. The battle between our bodies' base desires and our souls lasts as long as we live, and if the battleground is not sexual temptations, then it will manifest itself in other forms, such as gluttony, stinginess, jealousy, various addictions, pursuit of power, etc.
Of course you must do everything you can to prevent children from being exposed to porn. But when it comes to adults---leave their choices up to them.