So you are suprised that in the end times men will call evil good and good evil? Why? Also who made you and other Christians the guardians of mankind? Your only responsibility is to preach the gospel, live an obedient life and let God be God.
Jesus said that no man can come to Him unless the Father calls them. You are not God and you don't have His foreknowledge so why get so uptight about those who reject God's truth? We are called to be salt and light not judge and executioner. You cannot be either salt or light with a brickbat, which is why Jesus told us to love our neighbors as ourselves, which includes the gay community. When Paul preached to the philosophers in Athens did he call them evil idol worshippers and sodomites? Nope. He laid out God's plan for salvation and let those who heard him make up their own minds. Men have been calling evil good and good evil long before the Lord came to redeem mankind.