Respectfully, I do. That's to say as a singleton, I don't get the tax deductions that the government gives to married people.
I don't know enough about UK taxes, but in the US, married people sometimes pay more than singles, sometimes less, depending on the situation. When I was in a same sex relationship, I calculated how much taxes we would pay if we could file as a married couple. We would have paid much more taxes if we could file as married, because her income was much lower than mine, so filing as a married couple would have brought her into a higher tax bracket. Depends on the individual case.
People with children get tax deductions to help pay for raising their children, but you don't have to be married to have children.
When I talked about donating 100 pounds, I meant voluntarily. A donation is, by definition, voluntarily. My point was that it's easy to say the government has the right to collect revenue when it's coming from someone else's pocket.
As for the point that someone who can afford a destination wedding at a Scottish castle can afford a visa fee; well someone who can afford a destination wedding at a Scottish castle isn't likely to move to the UK in order to go on the dole, either.
Well, in practical terms, it doesn't really matter what, ethically, the government has a right to do. However, speaking legally rather than ethically, I know that the new rules have been protested on the grounds that:
1) The fact that people who marry in the Church of England are exempt is a form of religious discrimination.
2) The rules violate the right of every human being to have the freedom to form a family, as stated in the International Declaration of Human Rights.
I guess we'll just have to wait and see.