You mean like our Founders that banned sodomy/homosexuality, adultery and, in some states, shacking up?
This nation was great because it was founded upon Judeo-Christianity and principle that rights come from God and can't be taken away by the Creator.
No nation would survive, let alone thrive, if rooted in libertarianism. Legalizing deviant behavior puts nations on the same road Sodom and Gomorrah and Roman Empire ended up going down.
No the country was and is great because the founders understood that power corrupts and crafted a government on the concept of checks and balances and limited power. You give a judeo Christan leader absolute power and that person will turn into a dictator just like every other human on this earth. Period. That is why these Christian men gave us freedom of religion and freedom of speech and 3 branches of government and it is also why they understood those rights came form God not corrupt man.
The roman empire collapsed because they switched from a republic to a dictatorship and citizenship become worthless. You do understand the greatest period of Rome expansion and growth was before Christ was even born right at a time that they worshiped many gods like Mars and Venus? In fact Rome was founded 750 years before Christ.