For this reason God gave them up to dishonorable passions. For their women exchanged 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 one another, men committing shameless acts with men and receiving in themselves the due penalty for their error. (ESV)
There is an expression that says, "Be careful what you ask for, you just might get it." Man rejected the knowledge of God. God's response? God gave them up to dishonorable passions. When God gives you up to your sinful passions it is not an expression of your freedom, rather it is a prison sentence that God gives you over to. You are trapped in your rebellion.
In our culture today we are being told that there is nothing wrong with men having sexual relationships with men, and women having sexual relationships with women. In fact, if you have a problem with same sex relationships you are described as being hateful, homophobic, and out of touch with reality.
I do believe that we need to be loving toward anyone who is involved in a relationship with another person of the same sex. There is no place for a Christian to treat someone like this in a hateful way. That being said, it is not hateful to recognize the truth of what God himself has said about the subject.
From God's perspective homosexuality is not natural. There are those in our culture today who would like to scold God for his view. He is not intimidated. God is the creator of that which is natural. If anyone had a right to speak to the issue it is the Creator of all things. God's opinion is that homosexuality is unnatural, it is sinful, and it receives penalty from God for engaging in it.
What God ordains is perfect. When we step outside of his plan we become imprisoned in our own depravity. Be careful what you ask for, you just might get it.