it's because college-educated women now marry later, have fewer children, are less likely to view marriage as "financial security," so they are happier in their marriages and are the least likely to divorce.
however most women follow hypergamy so good luck
I have to respectfully disagree.
The onus isn't on explaining why 93% of college educated marriages DON'T end in divorce,
but why do such a staggering number of marriages that do NOT meet those criteria end in divorce (so much so that it lowers the overall average to 50%... meaning more than 50% of marriages between people with less education end in divorce).
I would hypothesize that many of those marriages are born of convenience, or the people getting married feel their hands are being forced: military couples and teenagers that have a kid together... not to mention the hapless 20 year olds, two years out of high school who realize life is harder than it was in 12th grade, and they have nothing going for them, and get married to the first girl who will spread their legs for them.
These marriages are beneficial to neither party--making divorce inevitable. If you're living in that culture, if that's your peer group, then yeah, divorce is as normal as a stop at payday advance.
But if that is NOT the group of people in your social circle, believe me, youre doing yourself an incredible disservice to read the divorce statistics, formulate an impression of women as being "whores that have a 50/50 chance of breaking your heart and leaving you", and living a life of solitude.