I don't doubt that writing a new laws is complicated, but if I write code, and realise that I constantly need to tack on more code to handle special cases, then I will normally revisits my design. It is not my impression that politicians do the same with laws.
One major issue, at least with Danish law makers, is that they want to target special groups, but that would be discriminating, so instead they attempt to target the behaviour of those group. This of cause will affect a number of people who where not in the original target group, so they add on exceptions and and details to narrow down the law. Also there never seems to be any clean up in the laws.
If your laws/rule exploded from a few hundred pages to 30.000 pages, you should really revisit that thoughts behind that law.
