'sexuality' in itself is a modern concept. noone was 'homosexual' or 'heterosexual' before the late 19th century.
i myself don't at all believe in genetic factors - to me, sexuality is environmental/culture, at least as far as we can know. that doesn't mean anything in terms of 'right' or 'wrong'. homo- or bisexuality can't be 'cured', and there's no reason to try.
nobody's getting hurt. quite the opposite, in fact.
i feel deeply for homosexual christians, i guess they can't help being christian either. god knows you have to take a lot of [insert your own word here, choose desired strength].