Even for gay hating wtbts it is grossly unfair for the many reasons posted, but mainly as Christians because it is even to them the practice of sin hence:
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 etc
1 Corinthians 6:11 - "And that is what some of you were. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and by the Spirit of our God."
Interestingly I found this regarding the subject:
While the scripture may sound clear, the debate actually surrounds the use of the Greek word that this particular version of the Bible translates as "homosexual offenders." The term is "arsenokoite." Some say that it is a reference to male prostitutes rather than to two committed homosexuals.
Yet, others argue that Paul, who wrote the passage, would not have repeated "male prostitutes" twice. Even others argue that the two root words in arsenokoite are the same terms used to prohibit any premarital or extramarital sexual relations, so they may not refer to homosexual relations alone.
However, even if a person believes that homosexuality is a sin based upon this scripture, the next verse does say that homosexuals can inherit the kingdom if they come to the Lord, Jesus Christ.