Consider a man born sterile. He hasn’t “lost” his ability to procreate because he never had it.
I have a car that needs a new transmission. I cannot use it for its pirpose, which is transportation. It is what we call *broken. *
Is it no longer a car? Is its function no longer transporting? no. It is still a car; its purpose is still to transport. This is why we have the work *broken, *to describe the state of something which cannot fulfilll its purpose, but that is still its purpose.
From an ecolutionary standpoint, various parts of a body have various functions. Scientists talk about tye functions of the various parts of the body to this day. Scientists differentiate between things which currently have functions, such as legs, and “residual” things, those which at a previous point of evolution had a function but which now do not. Some bones in the dolphin for example.
Now, humans are social animals who can think in a way that other animals, as far as we can tell. Those swans which mate for life cannot change that–they cannot decide to institute divorce. However, in order for human to have a reasonable society, certain things must occur; among those things, provision for the future of society; eg *children. *
From an evolutionary standpoint, the society which provides a good stable environment for its children works better than one which does not. In order to achieve this state, a public declaration not of loooooove but of *intention *to form a new unit of society, a family, is necessary. Then certain social norms apply: monogamy is enforced, benefits bestowed, etc. Why? Because society has an interest in its future.
The “broken” or infertile state of some heterosexual couples does not affect this. It is not a state which affects the intention, it is, through no fault of the couple, an inability to fulfill their intention.
What intention are people who are *inherently *unable to procreate making? They are functionally unable to form a family, to bring the future of society into being.
We have eroded the institution of marriage to the point that we can think of something like this. What we should be doing at this point is examining ourselves to see what we are doing. We have countless people who already have no understanding of how marriage works because they have not seen it. We have countless people who do not know how to maintain a marriage because they have not seen enough of that.
From an evolutionary standpoint, I think it is pretty apparent that when marriage is viewed as a mere optional declaration of loooooove, the society dies. It seems to be an evolutionary dead-end. Reinforcing this by acknowledging the relationships of homosexuals will only further and hasten this process.
And this is why those of us who understand this are against the legal recognition of what is merely an emotional relationship with no further ramifications.