[whughes]

That's not true: http://www.nytimes.com/2005/04/19/health/19divo.html

Also, "all US marriages" is not the same thing as "all US first marriages." A person divorced twice and divorcing for the third time is different from a person divorcing for the first time. That has little to do with the poor judgment of youth.

[cnlwsu]

according to wolfram its ~49.8%

http://www42.wolframalpha.com/input/?i=united+states+annual+...

[whughes]

Did you read the article I posted? It pretty extensively explains why that statistic is useless. Number of divorces / number of marriages is not the same thing as the chance of a marriage ending in divorce.