That seems to read things through a rather anachronistic lens of separation of church and state.
You'd be wrong.
Since the state and Church [Catholic] separated - ppl are more free to sin and more ppl go to hell now.
The Church kept the state from allowing antipathy towards morality.
Tho - and i fear this must be repeated ad infinitum - the Church didnt control the state.
IF we still had the Church as the only Christian teacher as was proper from and since Christ Himself - and the government abiding by their jurisdiction - we frankly wouldnt even need to fight for the rights of unborn babies. The elderly, and hetero marriages. And thats just a few things to note.
Additionally if the Church led nations - less warring except in defense - would happen.
The whole break off from the Church [because of the protesting in the late 1700's] led many into atheism. The coined phrase - 'ahhh the enlightenment'...
And or the filling up seats for hell....one way tickets.
[The era of peace when the Church was able to lead the world in all morality ended - ie - when satan was unchained] - and now its no holds bar.
Not exactly good for ppl. Everyone was still free in the Church and her teachings - we cannot judge a Church who led ppl in dignity and human freedom with a few scoundrels - yet this is where the power play comes in from revisionists to suggest the Church was like a cruel monarchy. But she kept the cruelest from over reaching their power and destorying even their own.
Consider since the break - since the separation - millions died under atheistic leaders.
The Church in all ages past kept Kings feet on the ground and wouldnt allow massive slaughters. It was the Church who also gave us the most wonderful institutions...hospitals - schools.
Even in ages of what we deem tyrannical - the Popes always made laws that kept the hands of the Kings from harming ppl. Once that break happened - nobody cares about the true moral teachings - nobody even cares if government gives us horrendous laws to provide for the free license of sins.
And so is the destruction of the self imploding nations...