I don’t see why you are bringing this up except to dodge the issue.
I think this is the question that needs to be answered. We’re talking about “rights”, but we don’t seem to see rights in the same way. Until we do that, we’ll just keep talking past each other.
Another important question to ask is “Are there other ways to protect rights besides recognizing gay marriage and/or civil unions?”
Strawberry Jam keeps alluding to anecdotal evidence (sorry, that’s what I call it when there are no sources or specific details given.

) about gay couples where the family contests the will, etc. Well, this could be a good argument in support of reforming laws surrounding wills, but why is the solution to this changing the definition of marriage? It’s not.
What it really all comes down to is that homosexual couples want to be recognized as normal. All the arguments about financial benefits, health care benefits, probate benefits, etc. are really just distractions intended to appeal to our sense of fairness. All those issues could be resolved in a thousand different ways besides changing the definition of marriage. The real issue is that they want to be seen as a couple just the same as any other couple.
That’s where the discussion really needs to be.
If anyone is genuinely interested in understanding
why the Catholic Church is against gay marriage and even civil unions, I really recommend taking a look at the documents I linked to in post #3. There are many good reasons, but they cannot be condensed into sound bite size posts by us random CAFers. If you really want to understand someone else’s position, it takes a bit of legwork. There’s no way around that.