I'm a month shy of turning 31
A few years back, I never thought it would have bothered me hitting my 30's, but then when it came it was a big reality check for me. Your 20's are such an exciting young time for experiencing life, and although it doesn't end when you hit 30, for me it was a big time to reflect on the decade just passed and see what I hadn't achieved, but said I was going to.
Guess I'll just have to make up for lost time in my 30's.
Oh & for the record. I think the perfect age is 29! If I could be 29 forever, I'd be very, very content!