According to factcheck.org
http://www.factcheck.org/what_is_a_civil_union.html
the main differences are
Joint Tax filings (married people can for federal taxes people in civil unions can only do so for state taxes).
Health Insurance Benefits federal law favors marriages over civil unions in this regard. ymmv when it comes to state laws.
Social Security benefits for survivors.... people in civil unions aren't treated the same as marriages.
If civil unions had all the same rights as marriage, the only reason for keeping the words different would be to have a 'second class' marriage, 'separate but equal'.
It comes down to the heterosexuals who want to feel their marriages are better than, are the 'real' marriages, wanting to protect that 'superiority' by denying gays the word.
And that's a clear discrimination there is no justification for harming homosexual people.
What underlies this is the heterosexuals who feel this way not understanding homosexuality.
Last night, I listened to a radio called who said he's a marine complaining that he's a baptist, and this country was founded on Christian values, and the gays getting so much attention to their rights now was nothing but the country embracing things that were wrong, and thhe destruction of the nation's morals, and so it's no surprised the country is having some hard times while we do that.
In other words, ending discrimination against gays is the cause of the financial crash.
Many people actually seem to view things that way. They use the word 'morality' to describe their desire to discriminate - not to describe the end of wrong discrimination.
So when you talk about 'gay marriage' to such people, they hear you are attacking their religion, their country, and inviting the country to be destroyed.
And we wonder how it was possible to scapegoat Jews in 1930's Germany?
How can you have a discussion on the details of the law with such people, when they are on such a different agenda?
If someone asked you to agree to the terrorists nuking the country because of a fine legal 'right' they're claimed to have, would you agree to that?
Of course not - but that's how many of these people seem to react to gay marriage. It's irrational, it's immoral, and it's well ingrained.
I made this analogy on another point, but it also helps explain something like the south's almost universal defense of slavery while most did not own slaves - it was viewed as attack on their 'culture' that made them willing to leave the nation and go to war, not for so much rational reasons, but fury over an 'attack' on their 'way of life'. Who cared about the slaves' rights? Who cared about the gays' rights?
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