Which ones? I keep hearing people make those claims yet when we look at the 'fall' of societies- I can't think of any that did.
The Ottoman Empire? Nope- that was losing World War 1 and rise of secular forces.
The Aztec Empire? Nope- that was caused by the Spanish and the collusion of the Aztec's conquered neighbors.
The Incan Empire? Nope- see above.
The reality is that the United States is the most powerful country in the world- and we have what ancient Jews would consider an immoral society.
The societies that are the least tolerant of 'immoral and sexual deviancy'? Well that would be the repressed of Muslim societies- Iran and Saudi Arabia.
Which do you choose as the most 'moral path'? The United States or Saudi Arabia?
We are tolerant and have always been tolerant. We have never killed gays in this country like the Muslim societies.
The Ottoman Empire killed Armenian Christians because of the rise of Islam and they were seen as a threat.
Aztec's over used their resources as well as the Inca's.
Have you read The Decline and Fall of the Roman Empire by Edward Gibbon?
Life became cheap in the latter days of the Roman Empire. Burdensome regulation and taxes made manufacturing and trade unprofitable. Families were locked into hereditary trades and vocations allowing little if any vocational choice. Eventually, children were seen as a needless burden and abortion and infanticide became commonplace. In some cases, children were sold into slavery.
Manners and social life fell into debauchery. Under Justinian, entertainment grew bawdier and more bizarre. Orgies and love feasts were common. Homosexuality and bestiality were openly practiced. Under Nero, Christians were blamed for the great fire in Rome and horribly persecuted.
Similar patterns can be found in other civilizations. In Greece, the music of the young people became wild and coarse. Popular entertainment was brutal and vulgar. Promiscuity, homosexuality, and drunkenness became a daily part of life. And all moral and social restraints were lost leading to greater decadence.
In Carthage, worship turned from Baal to the earth goddess Tanit. "Sacrifices to the goddess of fertility were supposed to ensure productivity, long life, and even greater profits."Ornately carved funeral monuments depicting infant sacrifice can be seen today along with thousands of tiny stone coffins to infants sacrificed to the pagan goddess.
The parallels to our own nation are striking. No, we don't sacrifice infants to a pagan goddess, but we have aborted over 57 million babies on the altar of convenience. And various sexual practices are openly accepted as part of an alternative lifestyle.
It starts out small and continues until the society falls.
First it became acceptable to have sex out or wedlock
Then it became acceptable for couples to move in together without marriage and have children out of wedlock.
Our children are being exposed to violent video games and sex on TV
From acceptance of homosexuality it moves on to, polygamy, to sex with animals and on and on down the line.
It is a combination of all not just sex or homosexuality that leads to the society's downfall.