'Here we go again' was intended merely as a rueful comment on the fact that so many discussions on this forum, and the SE26 forum, which I also post on, seem to morph into an attack on Christianity or religion in general, and that Christian view which is attacked is so often a parody of the view held by many thoughtful Christians. (Dawkins and co play the same trick - 'you can't be a proper Christian if you don't believe all homosexuals will go to hell' etc.)
I myself have difficulties with the Christian 'party line' on homosexuality, for the reasons 'nevermodern' gives, that is, that the modern scientific understanding of homosexuality (and I understand this dates only from the nineteenth century) sees it as a matter of more or less pre-determined biological orientation rather than one of moral choice. A Christian response to that might be to try to distinguish between a homosexual orientation and homosexual practice, and to draw an analogy with, for example, a desire to commit adultery (inevitable in our fallen world) and actually committing it (a matter of moral choice.) But you won't need me to point out the objections which can be levelled against that view!