Everyone has to have a first post

So everyone has to have a first post. It seems fairly obligatory from all the blogs I've looked at. I have started this blog at Jessi's urging. I can't decide whether that's because she thinks I should do it since lots of people at PPC (where I work) have blogs, or because she is interested in what I might write, or because she thinks it's cool that a woman "my age" (more about that later) can, and does behave like someone half my age, at least some of the time.
Some examples of behavior that seems a little less than age appropriate:

• I don't dress like a baby boomer.
• I would rather party with my co-workers on my birthday (and oh did we party) than take my husband to the airport.
• I changed careers recently, including going back to school and getting a degree in Comp Sci -- and then getting work in the industry despite the slowdown. Well maybe this one just shows intelligence rather than inappropriate for age.
• I like most of the same kinds of movies.
• My daughter doesn't mind being seen with me. (She's the same age as some of my coworkers)

Question? Is it a bad thing when someone my age acts years younger. Does it cause friction with people the same age? Does it cause friction with the younger people at work?