@tinyfaery – Maybe, just maybe, instead of pouncing on a newbie about repeat questions (when the guidelines or site functionality do not encourage finding and using older discussions) and instead of misrepresenting yourself to someone you KNOW won’t know you or your history (and then assuming that everyone has the time to go through your comment history [which is impossible] and find out who you really are), if you have nothing serious to add to the discussion, you can simply not post. Such comments only seem to derail the discussion and not contribute anything of value, which does not foster a positive community that includes all new people too. Apparently you missed the memo that sarcasm doesn’t work nearly well via words on the Internet, what with no tone of voice and all.
Now, to answer the question asked. I am a big fan of the Golden Rule. It’s just a nice simple rule that works in pretty much every situation. In this situation it states that if I were gay I would likely want to be allowed to marry whomever I wanted to, thus I do not voice any objections against gays wanting to marry. Beyond that, I have many libertarian outlooks, one of which is “if two consenting people do an activity that does not involve or affect me, I have no right to deny or permit the activity”, and this applies in this case too. Luckily I live in Canada where not only gays but non-religious folk can get the benefits of marriage (I for instance don’t believe in marriage, but I file my taxes as common-law with my partner and I get most/all the benefits I would get if I were married).
Beyond that, there’s the simple fact that allowing gay people to marry will increase the amount of money they spend on marriages and thus boost the economy overall.