Because we don't know the meaning of sacrifice. We live in a 'me' world. Back in the day you needed to have lots of kids so that a few would survive. You needed losts of kids to help you in your farm. These days, marriage seems like it is almost out of fashion.

People can have kids without getting married. Marriage is optional. They say that after 4-5 years of being with someone the sex-life goes down hill. So for people who value sex more than the relationship, it is time to find another partner.

The thing is that the longer you are married the more easy it is to take your partner for granted. And that is for the rest of us.

The pressure for guys like Tiger Woods, Al Gore, George Lopez, etc, who are famous and have lots of money and are well known to so many women. Well, is it really that surprizing that these guys marriage gets in trouble?

I am more surprized by people like Jay Leno who has been married for so long than people that you mention above whose marriages have dissolved. There is a whole industry (the gossip magazines) that feeds off material from their affairs. Shoot, even you and I are discussing it.