I have been riding seriously (as an adult anyway) since the early 90's. I split my time between the roads and the trails and love them both for different reasons. :)
My current equipment is a 1992 Trek 5200, first generation carbon fiber frame, and an absolute dream to ride, even after 20 years (sorry no link, it predates most web stuff, the closest I could find was from 2006 or a history of the carbon frame). For the trails I use a 2003 Trek Fuel 90 which as been a real soldier.