2)Why do they want this piece of paper? Because it covers health insurance coverage, power of attorney issues, inheritance, legal proceedings, criminal law, adoption issues, and a whole GAGGLE of other issues. And while a number of them need to be addressed for people in general, some of them (such as health insurance) are only solved via marriage (you cannot cover your sister or friend under your employer's insurance, but you certainly can cover your spouse). The piece of paper argument is ridiculous, it isn't the piece of paper people are after (though having something 'official' is nice), but the rights inherent in that.