You said it best. We all have desires and urges that we must suppress. That is TRUE! But if someone is truly happy living with same sex partner and not trying to bother anyone else, I would leave them alone!
I still prefer they keep it all hidden. We have enough sexual sin without their very visible presence in public bringing up the whole subject to children, who frankly should not even countenance any of it until maybe 10. No real desire until 13.
Even worse if they are allowed to raise children. Bad for those children, yes, but blatantly brings up the sex subject to other children when it needn’t be there.