First of all, the term "heterosexuality" (as well as homosexuality and bisexuality of course) barely existed 100 years ago. This is relatively important because the point of this debate is that the heterosexual/homosexual scheme is a product of our society, not nature.
Now, since these concepts are only historical, they can be deconstructed just as they were constructed.
Sex is often seen as a reproductive function, a means rather than an end. The biological characteristics of males and females, which represent "nature" for many people, compose what is usually the main argument of those who declare heterosexuality the normal way.
The problem is that what is natural is what we do by instinct ; and it is undeniable that we can be instinctively attracted to people of the same sex as well as the opposite. But because of our education and basically our exposition to those social conventions, we tend to repress our natural bisexuality. This repression eventually leads to a latent sexual complex, which can degenerate and give identity complexes to some people. We can define one of the syptoms as homosexuality, which translates your need to free your natural sexuality.
But while most of us today can tolerate homosexuality, - which conforts us into knowing that we are in the norm ourselves - it is hard to imagine living in a society rid of those same norms. Such a society is yet possible, and i'll give the example of ancient Greece, where bisexuality was common, and where different sexual preferencies were experienced as a natural thing rather than an illness. This example shows that our hetero/homosexual system is peculiar to this society - and thus has nothing to do with nature.
Now, since these concepts are only historical, they can be deconstructed just as they were constructed.
Sex is often seen as a reproductive function, a means rather than an end. The biological characteristics of males and females, which represent "nature" for many people, compose what is usually the main argument of those who declare heterosexuality the normal way.
The problem is that what is natural is what we do by instinct ; and it is undeniable that we can be instinctively attracted to people of the same sex as well as the opposite. But because of our education and basically our exposition to those social conventions, we tend to repress our natural bisexuality. This repression eventually leads to a latent sexual complex, which can degenerate and give identity complexes to some people. We can define one of the syptoms as homosexuality, which translates your need to free your natural sexuality.
But while most of us today can tolerate homosexuality, - which conforts us into knowing that we are in the norm ourselves - it is hard to imagine living in a society rid of those same norms. Such a society is yet possible, and i'll give the example of ancient Greece, where bisexuality was common, and where different sexual preferencies were experienced as a natural thing rather than an illness. This example shows that our hetero/homosexual system is peculiar to this society - and thus has nothing to do with nature.