Having all laws expire every 20 years solves two major problems with our current system.

First, all the old stupid laws would quickly drop off the books. And the good citizens of Georgia and enjoy their oral sex without fear of doing 1 to 20 years hard time.

But as importantly, the legislative branch would be kept supremely busy RENEWING THE IMPORTANT LAWS like murder, rape, etc. Now the new legislator can go home and say that he renewed the laws preventing child pornography. His constituency is happy. He is happy. The country is happy. And he doesn't feel compelled to go create problems by writing a bunch of new laws that don't need to exist.