I don't think you're being entirely fair. You view this issue as being governed entirely by ideology and moral codes. But Uberpod is just trying to discuss the practical reality of it.
One of the unfortunate side effects of being a "believer" is that beliefs tend to trump practicality for the believer, to the point that they see life in terms of competing belief systems instead of actual events and relationships. And they don't understand that when they are talking to a "non-believer", they are talking to someone who sees life in terms if actual events and relationships, and not in terms of belief systems or moral codes. At least not initially, anyway.
Actual reality is complex, and there are lots of aspects of it that we don't fully understand, and so we need to be careful about just making blind assumptions based on minimal information just because they reinforce our belief systems. Especially when we're trying to converse with someone who doesn't hold to our belief system.
This may be a Christian web site, but it's clear that it's inviting "non-believers" to come and discuss these issues. So I think it's only appropriate to try and relate to the people we invite to participate, here, in a way that respects their point of view, even if we don't agree with it.
From Uberpod's perspective, this issue is not about anyone's belief system, or corresponding moral codes, it's about trying to determine the functionality of a complex set of ideas and relationships.
So far there is very clear evidence to support the idea that sexual orientation is very often built into us from birth, simply by the fact that there are millions of human beings that attest to having been attracted to one sex or another from as far back as they can remember. And it would be just blind ignorance not to believe what they are telling us. However, the exact source of these feelings remains a mystery. There is evidence of it being both a genetic inclination and the result of social experiences. And as with most things, the truth likely to be a combination of both of these, as well as other less obvious factors. And there will be no "one size fits all" resolution, here. It will be a unique combination of things, for each of us.