Sin would literally destroy the world without common grace from God. But God's wrath must be satisfied too. And God does give people over to the desires of their hearts and the sins that really do consume them. As we suppress the truth of God and worship things created instead of the Creator, God wrath is released on the unrighteousness of man, as He gives some over to their "dishonorable passions." Romans 1:26-27 begins to tell us of where sin takes people who turn from God's grace. "...Women exchange natural relations for those that are contrary to nature; and the men likewise gave up natural relations with women and were consumed with passion for on another, men committing shameless acts with men and receiving in themselves the due penalty for their error."
Sex is the next best thing to God. And when sex doesn't fill the emptiness in a persons life that only God can, they continue to seek it out. Some are given over to the lust and passions, and seek for that satisfaction in homosexual relationships. God is NOT okay with this. HE is what should be sought out to fill any void in our lives. John Piper talks to this in this video; not to the homosexual part, but He tells us that God is greater than sex.
This was a video I saw on Reckless Raging Fury. Thanks Jarrett.
I can only speculate that when it says, "and receiving in themselves the due penalty for their error," Paul was referring to STDs and other illnesses. God's wrath must be satisfied when we sin. So, those that do not repent are given over to that sin. Ultimately, they will pay an eternal price for denying God.
But God is love too. And God provided a way of escape from sins eternal penalty. Jesus' death on the cross provided that way. We can all turn from our sin and live in the grace God gives. Even those who are given over to their dishonorable passions can know the grace of God by repenting and turning from their sin.
Praise God for His Grace.