Alan Shatter's campaign to abolish Inheritance Tax

You mean all the do gooders who voted c. 60:40 in favour of changing the constitution to allow for marriage equality?
The do gooders who pushed Same Sex Marriage through to become a law, which replaced a Civil Partnership. It discriminates against people who are not in a sexual relationship but are living together.
 
The do gooders who pushed Same Sex Marriage through to become a law, which replaced a Civil Partnership. It discriminates against people who are not in a sexual relationship but are living together.
Well we could have had both, I don't see why / how the same sex marriage lobby necessarily adversely impacts that.

Of course, civil partnership itself was inherently discriminatory as it was only available to people of the same sex.
 
It’s a pity this isn’t available to both same- and opposite-sex couples in Ireland.

To give most of the legal protections of marriage without the symbolism.
The pacs doesn't give the same protection as the marriage particularly in terms of inheritance/death. The partner inherits only if there is a will. And even if there's a will, they can only inherit a limited amount if there are children while a married spouse would inherit half of the assets. The amount available for the pacsed partner depends on the number of children. They don't have access to the same "widow" pension rights either.
As for the symbolism, church weddings have no legal value in France, the only legal weddings also take place in the Town Hall.