I've also said homosexual acts are not a mere matter of sexual preference, but are sinful unnatural actions that come from evil desires. But here is an even less popular idea. God is not only angry with people in this life, abandoning them to the consequences of their own sinful actions. There is an eternal punishment hanging over them as well. The idea of hell is very very unpopular.
People hate it.
After all, some non-Christians will agree with Paul idolatry is wrong and what Buddhists and Hindus teach is silly. Some non-Christians think homosexuality is wrong. But you will be hard pressed to find a non-Christian who likes the idea that the whole of humanity is under God's judgement and the only way to avoid that judgement is through faith in Christ. Yet that is the hard truth that Romans challenges us with this morning. He abandons those who reject him.