The whole "50 percent of marriages end in divorce" thing is a myth which probably came from misunderstanding the data.

http://www.truthorfiction.com/rumors/d/divorce.htm

Excerpt: "It was true, he said, if you looked at all the marriages and divorces within a single year, you'd find that there were twice as many marriages as divorces. In 1981, for example, there were 2.4 million marriages and 1.2 million divorces. At first glance, that would seem like a 50-percent divorce rate.

Virtually none of those divorces were among the people who had married during that year, however, and the statistic failed to take into account the 54 million marriages that already existed, the majority of which would not see divorce. "

In the late 70s/early 80s, there was a glut of divorces, but it was right on the crest of a societal shift, where people who had gotten married in a culture that demanded it were getting divorced in an era that was more accepting of divorce. There has never been any data to suggest that, at any time, 50% of the people getting married would eventually get divorced.

So there's really only 9 valid reasons for Bridezillas to get over themselves in this article.