Every general increase of freedom is accompanied by some degeneracy, attributable to the same causes as the freedom.
I'd love to write some porn, but I don't know if I have the right engines. When I was a young man and I was tempted to write porn, imaginary parents would appear over my shoulder and read what I was writing; just about the point that I managed to banish the imaginary parents, real children would lean over my shoulder and read what I was writing.
If a thing is free to be good it is also free to be bad. And free will is what has made evil possible. Why, then, did God give them free will? Because free will, though it makes evil possible, is also the only thing that makes possible any love or goodness or joy worth having. A world of automata--of creatures that worked like machines--would hardly be worth creating. The happiness which God designs for His higher creatures is the happiness of being freely, voluntarily united to Him and to each other in an ecstasy of love and delight compared with which the most rapturous love between a man and a woman on this earth is mere milk and water. And for that they must be free.