Remember: marriage is eugenic and feminism dysgenic. You will find on Tuesday that it is women and female MPs who are the ones most likely to vote for gay marriage.
Gay marriage is immoral because it is unnecessary. It is unnecessary because gay people already have their civil partnership (which gives them the same rights as a married couple against each other the most important of which is the ability to inherit each other's property free of inheritance tax which starts at 40%). However, this is not enough for them, and they are now encroaching on the territory of heterosexuals for whom the institution of marriage was originally created.
Marriage was created for the purpose of rearing children and passing on your traditions, property and the knowledge your ancestors have accumulated on to the next generation and to maintain and augment what you already have.
If you do not do this, you will lose your wealth and status in life and your offspring will be degenerate.
If most of the offspring of most parents in a society are degenerate then they will be vulnerable to foreign invasion and exploitation.
It is a delicate mechanism that must not be tampered with by the ignorant and the immoral, the frivolous, the irresponsible and the venal, as you would expect someone to be who has become British Prime Minister without knowing what magna carta is.
As for the evil that they cannot see, it is already apparent to me. It is the equivalent of alcoholic asking for more drink after he is already drunk. It is evidence of the alcoholism that will eventually kill him.
The fact that a Conservative Prime Minister can propose such an immoral and insane piece of legislation and have so much support is indicative of the degeneracy and dementia of the British.
A superior man, in regard to what he does not know, shows a cautious reserve. If names be not correct, language is not in accordance with the truth of things. If language be not in accordance with the truth of things, affairs cannot be carried on to success. When affairs cannot be carried on to success, proprieties and music do not flourish. When proprieties and music do not flourish, punishments will not be properly awarded. When punishments are not properly awarded, the people do not know how to move hand or foot. Therefore a superior man considers it necessary that the names he uses may be spoken appropriately, and also that what he speaks may be carried out appropriately. What the superior man requires is just that in his words there may be nothing incorrect.— Confucius, Analects, Book XIII, Chapter 3, verses 4-7
We cannot and must not call what gay people do marriage, in other words.