I so agree with this. I'm turning 29 in a few months and 30 next year (YIKES!), but the closer I come to the 30-mark, the more liberated I feel. I have more money, more free time, and better friends. I think life on the other side of 30 will be MUCH better.
Also, given the advances in healthcare technology, it's quite possible we can live up to be 100 or more. In a life of 100 years, the first 30 can be the preparation mode as well. There's SO much time and opportunities ahead for us. :)