What a cool thread. 
I am 45 and have owned my Boxster since 2001.  When I was in my early 20's I started with custom VW bugs.  Then had a 1973 BMW 2002, which is the only car I ever regretted selling.  Maybe that's why I have the same Porsche for so long.
Anyhow, I am in the chiropractic industry.  I practiced as a Doctor of Chiropractic for nearly 19 years and retired from active practice in 2011.  I am now Owner/CEO of a software company that serves the chiropractic industry (although we have non-chiro clients).  I also teach doctors about running their practice and business.  Since I like teaching (and learning), I really like contributing to this forum.