Read Romans ch 1 vs 25-27. Those verses describe homosexual acts that Paul cites as having been universally practiced by both males and females in the antediluvian world.
As you said, Paul also cites murder and nature worship as widespread sinful practices (vs 21-23) that caused God to destroy the antediluvian world. However, he gives equal weight to the apparently common practice of homosexual sins as another cause for God to destroy all the antediluvians except righteous Noah and his family. I think that today's world is probably even more depraved in God's eyes than the antediluvian world was, and He says that it will be destroyed by fire next time.
But thanks for the insight. I never really understood if Paul was talking past or present. I always thought of Lamech and his unholy oath, which he murdered someone for the sake of his unholy oath, he also boasted about it to his two wives as well. I doubt that people making unholy oaths and killing other people for the sake of them sounds very mafia-esque. But thanks for your input. Also interesting is the ponzi scheme that the federal government pretty much runs with us, yet, like a ponzi scheme, they throw up a bunch of other things like same-gender marriage as great while the fraud of massive unpayable National Debt is being committed right in front of us. It does resonate as people saying that hey, we’re getting married, all while we are getting scammed by the government out of tons of money and a crippled national defense for the convenience of a few people getting kicks.