It is typically Protestants who have such egregious misconceptions of homosexuality, due to the numerous poor translations published specifically for them. First consider the Douay-Rheims Bible (DRB), 1 Corinthians 6.9-10 and the New Jerusalem Bible's 1 Corinthians 6.9-10, both officially approved by the Church (i.e. they have the Imprimatur), although they differ by a century, respectively:
Know you not that the unjust shall not possess the kingdom of God? Do not err: neither fornicators, nor idolaters, nor adulterers,
Nor the effeminate, nor liers with mankind, nor thieves, nor covetous, nor drunkards, nor railers, nor extortioners, shall possess the kingdom of God.
Do you not realise that people who do evil will never inherit the kingdom of God? Make no mistake the sexually immoral, idolaters, adulterers, the self-indulgent, sodomites,
thieves, misers, drunkards, slanderers and swindlers, none of these will inherit the kingdom of God.
Note in both cases, homosexuals are not condemned; clearly in the first and at best in the second, homosexual actions are condemned. (The NJB refers to Sodomites, recalling the attempted rape of angels by Sodom's men.) Now consider some Protestant translations. First, here's the New International Version's 1 Corinthians 6.9-10:
Do you not know that the wicked will not inherit the kingdom of God? Do not be deceived: Neither the sexually immoral nor idolaters nor adulterers nor male prostitutes nor homosexual offenders
nor thieves nor the greedy nor drunkards nor slanderers nor swindlers will inherit the kingdom of God.
Now the same passage according to the New American Standard Bible (NASB):
Or do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived; neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor homosexuals,
nor thieves, nor the covetous, nor drunkards, nor revilers, nor swindlers, will inherit the kingdom of God.
I read in one of these NASB's that it is an update of the New King James Version (NKJV), itself an update of the flawed King James Version (KJV). So let's see the passage according to the NKJV:
Do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived. Neither fornicators, nor idolaters, nor adulterers, nor homosexuals, nor sodomites,
nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners will inherit the kingdom of God.
And there you have it. Protestants have completely changed the meaning from homosexual actions to homosexuals themselves. For the record, let's see the passage according to the KJV:
Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,
Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.
Note that the KJV was first published two years after the DRB's Old Testament, and twenty-nine years after the DRB's New Testament. Thus we see the similarity between nor abusers of themselves with mankind and nor liers with mankind. The KJV's translation reflects what the Church teaches, i.e. homosexual actions are a sin against the individuals that do them. The original words used do not state this fact, however, thus the DRB translation is still superior, even then, for actually translating (verbatim) what is written.
Two comments: The Church's teaching is consistent, and they trace their teaching authority back to Peter (DRB John 21.11-19), and their moral authority they trace to Jesus, as in the Sacrament of Reconciliation (John 20.23). Protestants, however, especially once they have abandoned the Church, are more easily driven to confusion. To compound this error, many Protestants are taught to believe that the Bible their translation of the Bible is the literal, inerrant Word of God. (I have history books stating that this Protestant doctrine is a recent development in the history of USA, largely in response to Darwin.) Thus, depending on their translation of the Bible (KJV or NASB or NIV) they are led to believe separate things: it is homosexual actions that are sinful (KJV), it is homosexuals that are sinful (NASB), or it is unrepentant homosexuals, perhaps homosexuals in a relationship, who are sinful (NIV).
There is more to be said here, but I currently lack the words for it. I encourage you to research the Church, and I pray that Jesus will remove the confusion from his followers, both members of his Church and our separated brethren, as Catholics like to call them.