Rom. 1:28 That is why God abandoned them to their shameful desires. Even the women turned against the natural way to have sex and instead indulged in sex with each other.
People had rejected God. They had made the choice to do what was right in their own eyes. They took the low moral road and went after the momentary pleasures of the flesh. They did not have moral boundaries in place. It got so bad that God had had it. He simply quit on them and let them live by lust. He did not send anyone to warn them of what was ahead. He no longer showed them the way of righteousness.
God does reach His limits of tolerance. He warns and instructs man over and over again and when man refuses to listen, God lets them go on to wallow in their sinful behavior. He lets them be objects of His wrath. He no longer tries to rescue them. God gives us the freedom to choose what we want to do, but what happens as a result of the choices we make is on our souls.
All homosexual activity is sin. You may or may not agree with me, but God said it and I believe it. God makes it clear that those who participate in homosexuality or any other type of immoral behavior, are sinning against Him and will face the consequences. No amount of political correctives or popular opinion are going to change the facts. Everyone will stand before God and He will judge the soul based on Christ's righteousness and His Word.
You cannot be right with God and live immorally before Him. If you have a problem with that, argue with God about it. God abandons those who live immorally. It is true of us as individuals and us as a society. If we don't repent and change our ways, certain judgment will soon be upon us.