I think it’s VERY possible many/most homosexuals are that way by nature - bad nature. Defects occur by genetics and by pre-natal accident; why not defective sexuality?
I fear now, though, since they’ve been forcing themselves upon all of society in the last 20 years successfully, that many are now actually CHOOSING it - especially if they’ve been abused and don’t understand any other way.
I think the same could be said for: why not defective [insert whatever]. This is a very complex subject.
Ex-gays tell us their same-sex attraction wasn't a choice because they were confused. Science tells us environment plays a major factor and when reading story after story from ex-gays, we see environment playing a large part.
Some admit to choosing homosexuality. There's the Queer By Choice group, some radicals admit to choosing the lifestyle and state they need to recruit more, there are LUGS (Lesbian Until Graduation), etc.