[Paul C. Jesup]

Well the reason stated that people are against 'gay marriage' is because it threatens the institution of the marriage between a man and a woman.

So I asked the question of how the 'gay marriage' movement prevents a man and woman from getting married.

[Barnacle]

Well the reason stated that people are against 'gay marriage' is because it threatens the institution of the marriage between a man and a woman.

So I asked the question of how the 'gay marriage' movement prevents a man and woman from getting married.

I find your logic a bit hard to follow here. First, you state a fact, "people are against 'gay marriage' is because it threatens the institution of the marriage between a man and a woman."

Then you make make a leap to the question of, "how the 'gay marriage' movement prevents a man and woman from getting married."

"Prevention" is not a prerequisite to "threaten".

Non sequitur extraordinaire.