There is at least one thing that a male homosexual couple can do that a lesbian couple or a straight couple cannot. That said, I think most vocal opposition to same-sex marriage comes from people who fullfil these criteria:
1. Come from an authoritarian background of the sort that dictates rigid gender and social roles (i.e. that one of the things you do in life is grow up, get [heterosexually] married and have children), and you don't get to opt out of the process (which is why a lot of these people say or imply that gay people are perpetual children or irresponsible, etc.).
2. Has played along with the obligatory social roles they feel they have to.
3. Resents the hell out of it for one reason or another, and doesn't want anyone else to get a pass. (E.g. "I had to marry a woman and I'm totally miserable, so you should have to to.")
(no subject)
1. Come from an authoritarian background of the sort that dictates rigid gender and social roles (i.e. that one of the things you do in life is grow up, get [heterosexually] married and have children), and you don't get to opt out of the process (which is why a lot of these people say or imply that gay people are perpetual children or irresponsible, etc.).
2. Has played along with the obligatory social roles they feel they have to.
3. Resents the hell out of it for one reason or another, and doesn't want anyone else to get a pass. (E.g. "I had to marry a woman and I'm totally miserable, so you should have to to.")
-- ?!