That's not entirely true, laws are also designed by politicians and bureaucrats, which means they'll also be written to serve politicians (incumbent advantages,

That's not entirely true, laws are also designed by politicians and bureaucrats, which means they'll also be written to serve politicians (incumbent advantages, for example) and bureaucracy itself (agencies don't generally lobby for more focused goals). Point being, I agree it's a shame, and I would love something better, but at some point we're saying laws are written by people and interest groups, which is pretty obvious and unavoidable.