True. I don’t think it’s happened on a global scale except in Noah’s day or during Nimrod’s rebellion at Babel. But today’s slide into depravity is happening hand-in-hand with globalism.
God has wiped out depraved civilizations many times in history, but it only happened once globally. That’s where it is headed now.
As Romans 1 also indicates, salvation from this descent into depravity and the resulting destruction can only be found in the Gospel.
Yes and no. I believe the Greco-Roman world was very sexually immoral. This was the world with early churches that Paul wrote many epistles to. I've pointed this out to non-believers who've said that the Bible was written for a different culture than today's. Actually, the Roman world in Paul's day had temple prostitutes, killing of babies through exposure (abandoning him in the field), orgies, homosexuality, etc. This was in what was most of the known world at the time.
Meanwhile here in the Americas, was it much different? Today's tribal spokesmen claim that they had gay "marriage" early in their culture. And, of course, the Aztecs did their child sacrifices.
So we've seen it on a global scale since Noah's day. Like you, I agree that the solution to the problem is getting back to God. As much as I want to win the arguments against modern day hedonism (Romans 1:24-32), the more comprehensive solution is winning the argument over the existence of God and that He's worth living for (the verses before that in Romans 1:16-23). We win that cultural battle and the rest of it is solved. Our Christian predecessors won it in the past. Are we going to step up the plate now that it's our turn?