>Some people are beyond repair

What you speak of is called a "reprobate mind," and God will turn people over to a reprobate mind at some point if they continually exhibit a desire to not only not hear God, but to embrace false ways.

Here is one example related to homosexuality (Romans 1:27-29): http://www.biblegateway.com/passage/?search=Romans+1%3A27-32&version=KJV



27 And likewise also the men, leaving the natural use of the woman, burned in their lust one toward another; men with men working that which is unseemly, and receiving in themselves that recompence of their error which was meet.

28 And even as they did not like to retain God in their knowledge, God gave them over to a reprobate mind, to do those things which are not convenient;

29 Being filled with all unrighteousness, fornication, wickedness, covetousness, maliciousness; full of envy, murder, debate, deceit, malignity; whisperers,

30 Backbiters, haters of God, despiteful, proud, boasters, inventors of evil things, disobedient to parents,

31 Without understanding, covenantbreakers, without natural affection, implacable, unmerciful:

32 Who knowing the judgment of God, that they which commit such things are worthy of death, not only do the same, but have pleasure in them that do them.