How Is It That I'm Old Enough To Be Doing Anything For 20 Years?

Just got an e-mail at work yesterday acknowledging the fact that, as of last year, I have been with the Observatory for 20 years. In recognition of this fact, I get a pin, a plaque, a free dinner, a substantial gift certificate, and the disconcerting feeling of wondering where the hell all that time has gone and what exactly I've been doing with my life.