it is not scientific at all. It is social. what makes you think it is scientific? Do you know what science is?
Feel free to ask any doctor, or anyone with a biology background and they will tell you, that sexual orientation is the attraction towards a particular sex. For some reason, you feel this is not so.
not to mention that I disagree with a lot of what "science" says. it is sad that you are such a blind sheep that you will consider a topic "not up for debate" simply because a scientific establishment says it is so.
What is there to be debated? If you disagree with sexual orientation ,you believe it's impossible for anyone to be attracted to each other.