Mila Kunis on Casual Sex: 'It's like communism—good in theory, in execution it fails'
And yes, after multiple generations that exploded the divorce rate in this country, you've got plenty of young people who are taking the institution of marriage a bit more seriously. (But don't expect this to necessarily translate to being against gay marriage.)
The idea of being married to one person for 100 years or so (yes, the increase of technology is going to radically extend lifespan over the 21st century) sounds fine to me. Building a marriage is building a family -- and institution-building is what civic generations have been known for throughout American history.
Mila Kunis was born in 1983. Don't be surprised if you start seeing more of this kind of thing in the coming years as more Gen Ys begin to rise into prominence in the culture. It'll be much easier to see once the Gen Ys born in the mid '90s get older.
Here's hoping Kunis's new movie is good (warning: trailer on the next page has a few profanities near the end).