Its not. People are born a sexuality. No one can choose to just be attracted to a certain gender.
So holy God could be just to require the very blood of homosexuals, prescribing their death by stoning, knowing the guilty parties are but innocent victims of genetics?
The promoters of homosexuality are led by their god the Devil, identified as fallen angel "Lucifer, AKA "Satan".
At best you can claim possibility of a mutation of human genetics, that being a tendency to avoid reproduction of humans for the sake of solely fleshly desires. That mutation would erase that species if that mutation was replicated one too many times. It would be an assertion that God was wrong to say his creation was "good", while in fact subject to self annihilation based on flesh attraction alone. It just isn't reproducible. Members of a species practicing that don't replicate, therefore cease to exist.
The heterosexual model has continued mankind from generation to generation. The homosexual model can only end in extinction. That isn't in any way in agreement with God's will on earth or for eternity future.
Therefore it's reasonable to exterminate the deviants that promote heresy against both God and neighbor. So it is there is a continuing curse upon the deviants of society, which curse extends to those allowing that deviant behavior any grace at all.
That's why all of a society falls if that society commends perversion of God's will. The Bible, from Genesis to Revelation, plus some common sense, plus a little conscience, all come together to explain the demise of those societies regardless of their potential value to mankind and to God's kingdom.
God cannot, by the premise of Justice, allow departure from his will and enjoy his blessings at the same time. Every society that has winked at sin has been removed.
Only a blatant fool of the first, second and third order remain deceived o thing homosexuality is approved or at all allowed by God. He turns his hands down to anyone defying him about that. Saved? No. It's impossible for anyone to retain a sin that God labelled as an abomination deserving execution by stoning to death, yet receiving eternal blessing from him.
That's why it is clear the unrepentant homosexual is of the Devil, a heretic that has refused not just one, or up to two warnings, but a multitude of warnings to desist from that sin in particular immediately.
Modern genetics research has failed to discover any genetic trend to that sin. It doesn't exist in nature. There is no "gay gene". It is a behavioral choice. The choices are but two, to sin and choose death, or reject sin while choosing life.
Choose life and live.