Yes divorced, after 17 years. Definitely married too young, and I think the concept that people should stay together no matter what (not unique to society) just encourages laziness. I know I didn't try as hard as should have to be a good husband because of this, and assumed that I cold be slack and that my wife had no choice but to stay. I am remarried and try a lot harder now to be a good partner becasue I know my beautiful wife has plenty of other options if I take her for granted. I think this is a much more healthy approach to marriage.
I alos think the society's prudish approach to human sexuality is very harmful to many witness marriages, as was weel explained in Raymond Franz's book Crisis of Conscience. Spouses and lovers should feel free to be open and honest with each other about there desires and fantasies, without fear of seeming "unchristian" worldly or deviant, and maybe running the risk of the spouse running off to the elders for "help".
And very importantly, when couples get in trouble with their relationship, the last place they should go to for help is elders. Most elders are just not well suited to providing good advice, they will just parrot what the society says. Couples are much better off talking to good friends that have broad experience and open minds, or professionals in that area.
Perhaps a better question to ask is not how many divorce, but how many are still togehter but are not happy? How many have good open communication, helthy sexual relationships, real trust and genuine love? How many are just staying together becasue of the condemnation and shame that would come from the congregation if they split?