my dad raced in the 60's, and i always had a bike. got inspired by 'breaking away' and lemond winning the tdf, bought a roadbike and started racing. raced in california and europe in the early 90's, but had to quit after i got injured.
didn't ride for a long time after that, but wanted to start again about 18 months ago so i had my old fixie conversion shipped to me, started riding that, bought another real road bike, then a track bike, and here i am.
(i ride mostly fixed because i can get a better workout in less time, and i also climb and run regularly -- and compete -- so time is an issue).