Meh, marriage. Besides my personal feelings against the term because of it's religious origins and connotations, I don't see a point. If you and a partner get along as significant others, why do you need some giant ceremony and a TON of extra crap to do when you can just continue your relationship as is? In addition if things ever do sour, then there cannot be legal repercussions.
Besides the tax break, which I don't know how uniform that is out of the US, I just don't see a point. I mean, why is it so hard to say "I love her, she loves me, we're bonded and it's no different except that you spent money (possibly a ton of it for a large wedding ceremony) for a license so it says it on paper?"
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I am Jon Stewart with some Colbert cynicism, Thomas Edison's curiousity, wrapped around a hardcore gamer sprinkled very liberally with Deadpool, and finished off with an almost Poison Ivy-esque love/hate relationship with humanity flourish.