I fell in love with someone who lives on the other side of the imaginary dotted line of death known as our national border, and in order to enjoy the privilege of living with my loved one I am required by the government to jump through a series of hoops. Unlike anyone else, I am obliged to prove that I can afford a wife. Also, unlike anyone else, we are obliged to prove that we want to get married for legitimate federal government sanctioned reasons. For six months, our petition for a visa worked its way through Citizenship and Immigration Services and is now in the hands of the State Department where it will take some more months of processing.
Unlike other brides, mine has to prove to a bureaucrat that she knows me well enough to win the Newlywed Game in order to earn the right to live with me. Unlike other brides, she has to pass a physical and to prove that she's never been a troublemaker or a prostitute. We have to gather reams of documents and get them translated and notarized and stamped by all manner of officials.
What would be the downside of simply taking our word for it that we love each other and want to spend our lives together just like any other engaged couple?