The real question is why do people need an explanation for homosexuality? It's unimportant. Homosexuality isn't a disorder with a cause - it just happens naturally like developping certain skills or preferences. No one wants to know why someone fancies blondes or supports Villa. Knowing the source of homosexuality leads to judgement, it clearly influences people's attitude towards it. Many poeple would find it easier to accept homosexuals if it was proven that they have no choice. That worries me, it's disrespectful and intolerant.