You're wrong on both counts. My husband had a cousin that had a son and he said when the boy was three years old he knew there was something very, very different about him. He didn't want to do boy things but wanted to play dolls with his girl cousin. He had two brothers that football players and into all the male things. It is not a learned behaviour since this was in the "60's" and they lived in a small ranching community, I doubt the child had any interaction with homosexuals.
It should be looked at as birth defect. Parents shouldn't just take it for granted and need to work with their lesbian and male homosexual children and teach them that they have to remain celibate from homosexual encounters.
"Or do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived: neither the sexually immoral, nor idolaters, nor adulterers, nor men who practice homosexuality, nor thieves, nor the greedy, nor drunkards, nor revilers, nor swindlers will inherit the kingdom of God. And such were some of you. 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."
All of these corrupt behaviors were changed by those in Corinth because they made a conscious choice to do so. These behaviors are not acceptable and are non-excusable. The Word of God stands as a set of behavioral constraints that teach us what behavior in acceptable to God and that which is not acceptable. Those who practice any or all of the deviant behaviors have a choice to make. They can either choose to repent and cease their behavior and turn to the Lord or they can continue those behaviors and be condemned by him. The CHOICE is theirs.