wow...you are so harsh about life and love and marriage....It's okay to fail, we will learn from it and stand up again....not everybody has to experience the same.....there are some second or third marriages that are good and last forever....there are couples with age differences that are happily married....if you or I don't like it, we don't have to force our opinion on others....
She is in love, he is in love, they don't care about their age differences....so what? they are happy that's all it matters....they dont' know about the future same as us who don't know about our future either!
You really can't rely on statistic for getting married, you got to do what is good for you....

MT