I tend to agree with Elon Musk's idea that every law should come with an expiry date. So that there is debate before it is renewed.
Granted, that is pretty much the existing status quo. Not sure it would change the behavior in a positive direction.
[anti]dovetails with the Kavanaugh confirmation hearings and the fears that the important established precedents (Roe, Brown, etc) will come up for debate/overturn soon once he(or similar guy) gets the position.
Btw, Constitution is a law too. Should it have an expiry date too?
What happens if it's allowed to expire? Does the government just disband, and the country allowed to turn into Somalia while all the existing powerful organizations try to form their own government?
Yes? Why would one assume an 18th century framework should be preferred to one considering the modern world? Codifying our ideals seems like a better system than entrusting them to precedent.
Not necessarily. A constitution is a foundational law, a set of principles by which the nation is to be governed. Those principles are not expected to change very often, so no expiry date is needed. The detailed implementation of these principles, however, could - and probably should - be done with an expiry date.