Katie Couric's Notebook: Millennials

Nearly forty percent of people between the ages of 18 and 29 have a tattoo. It's all fun and games until you no longer "heart" Bobby...and that butterfly on your hip will be flying a lot lower when you're 50.

But there's something more indelible than ink on their bodies...it's the impression the past decade...the wars...the recession...has made on the minds of the Millennials...as this generation is called.

A new Pew Research Center study found more than one third are unemployed. One in six of them over 22 had to move back in with their parents. They voted in record numbers for change in 2008...but today roughly half say they are disappointed...that change never came.

Still, about 90 percent of these young adults say they're optimistic about their futures despite a lousy job market and gridlock in Washington. I don't know if this generation will fare as well as mine did.

Their still writing their stories, lets just hope they don't write too much of it...on their skin.

That's a page from my notebook.

I'm Katie Couric, CBS News.