Ok, well - and this is from a straight 22 year old male - I automatically have a couple of problems, which I will departmentalise in the same fashion as your query:
1) The arguement you consider for the gay/not survey depends on an automatic assumption that people understand why they are attracted to what they are. This is something I have encountered a fair bit (as I say, I am straight, but I have a fair few gay friends) - one of the automatic questions they get asked is "why
are you gay?". That's like asking "why
are you straight?". Or, for that matter, "why
do you like ice-cream?".
See, there's an automatic thought - whether you intended it or not - that homosexuality is chosen. Decided upon. And, inherently, wrong.
So, let's reverse your question:
How would you devise a test to prove whether you're straight or not? This isn't something I need help with, but I am fascinated by the question never the less. If sexuality gives us clues by the thoughts in one's head, does that mean being straight is virtual? Just because I think something, does that mean it's true? How would I test the thoughts in my head so as to make something virtual into something irrefutably tangible. Am I straight just because I say I am, or is straightness something tangible and solid.
I don't want to put a big 'think about that' tag on this, but I think it's very interesting to notice how, given the sexuality change, suddenly this question becomes a bit silly, and would be dismissed by most.
2) People define their sexuality by what they see with their eyes. Perhaps known as eye candy. Sexuality is a visual festival. Therefore, how would someone who is blind from birth know their true sexual identity.
Well, yes and no. For one, how can we speculate on one who is blind from birth experiences the world? Let's not patronise them - and elevate ourselves - by thinking we know 'best'. Let them work that out for themselves.
For another, I think it is UNBELIEVABLY simplistic to make such a statement as "People define their sexuality by what they see with their eyes." No, no, a thousand times NO!!! People will, of course, be turned on or off by what they see, but sexuality is SO MUCH MORE than that!!! A slight hesitation in a sentence, a scent, a small moment you can't see or hear but somehow feel, a miniscule burr in the accent, a hesitation in physicality which reveals that they are trying to behave in a certain way, forced flirtatiousness - these are some of the more obvious moments that you will hear time and time again.
Anyway, in answer to the question of "how would someone who is blind from birth know their true sexual identity." - well, they know. That's the answer. Same as for black, white, gay, straight, deaf, blind, dumb, lame, insane, anything else you can possibly add to this list. Frankly, the idea that attraction is entirely visual strikes me as incredibly basic. Let's face it - if disabled people can run MNCs, they can get their rocks off.
Which leads me to question another assumption you have suggested. X and Y. Black and White. Yin and Yan. I am a straight male, yet I can appreciate men for their physical virtues, and will happily list them on a chart of, say, top 10 men I would... does that make me gay? I don't think so. I think it makes me honest enough to recognise that I reflect on the world truthfully, and that I am comfortable with being a straight young man (and you'd be amazed how many young men are not
comfortable with that, for some stupid reason)...
I'm sorry if any of that sounded harsh or like an attack on you. It sounds to me like you are an intelligent person asking important questions. And I hope you respect and appreciate my replies.
Looking forward to talking more,