If the law is actually valuable and there is political capital for its continuation then surely the legislative body can vote to extend it with minimal fuss.

If the law is useless and there is political capital then surely the legislative body can vote to abolish it with minimal fuss.

A bit tongue in cheek, of course - but I can't image the amount of unnecessary work regular continuation of _every_ law would cause. Time limits on laws are already a thing, but it shouldn't be a default.

What you're suggesting is that if the government is dysfunctional, useful safety standards get abolished. That seems counterproductive.