* (policy) - If things don't work out, your wife will divorce you, take half of what you have and enslave you to pay her support for the next 15 years. Actually, she might do that just because she needs more passion while you are hard at work.
I'm not religious or anything, so a wedding in itself doesn't mean a lot to me, but my wife and I got married in no small part so we could share health insurance, help with her immigration, and lower our tax burden. I don't regret the marriage, I trust my wife, and we've been pretty happy for the last eight years.
(Also, few of the posters in this subthread are looking at the woman's side of the game theory)