That is our challenge, to decide if there is a God, then who speaks for God and then have we interpreted what was given in the manner it was meant to.
If one looks back, most laws of what people see as a secular government, would be based on spiritual principal of followers of faiths. Faith would have been/was a prime requirement to be elected.
It only the last hundred or so years that truly faith based laws brought forward by those elected, are eroding.
Thus we can rightly ask, if God does not leave us alone, has new guidance been given.
Of course as a Baha'i I believe it has. Man has been given the right to rule, providing that guidance is not ignored. It is written if it is ignored calamity awaits.
This is worth considering;
"The All-Knowing Physician hath His finger on the pulse of mankind. He perceiveth the disease, and prescribeth, in His unerring wisdom, the remedy. Every age hath its own problem, and every soul its particular aspiration. The remedy the world needeth in its present-day afflictions can never be the same as that which a subsequent age may require. Be anxiously concerned with the needs of the age ye live in, and center your deliberations on its exigencies and requirements..... "
Bahá'í Reference Library - Gleanings From the Writings of Bahá’u’lláh, Page 213
The immediate future will see great change, we live in very interesting times.
Regards Tony