Maybe late to this thread, but here's my bike history;
Suzuki TS50 - I was about 8 years old - couldn't reach the ground!
Honda CD175 (single carb model, 4-speed). Was Dad's bike but I used to ride it round the local park
Yamaha YZ125c - evil thing! The rear monoshock attached directly to the steering head, so large bumps at the rear would induce head shake
Yamaha RD350 - used to ride it to school!
Yamaha LC250, the first bike I raced on a proper track. I used to think I was quite fast until I did that!!
Yamaha XJ750, also a race bike - the footpegs were so short it failed a roadworthy. The trick was to keep the throttle open (shaftdrive holds the backend up) while dragging the front brake (anti-dive keeps the front-end up) - left go of either and you run out of ground clearance and you crash
Yamaha RZ350
Yamaha TZ350F - wild thing! Seized at 200kph+, which was quite exciting!
Yamaha TZ500G - fast at the time, but easily beaten by a modern 1,000cc sports bike now
Tony Hatton framed, Rotax-powered 250 gp bike - wildly unreliable, but 50+HP from 250cc will do that!
Kawasaki Z1R Turbo - completely nuts! When the turbo spun up, you could feel the frame twist - even in a straight line!
Kawasaki KDX175 - made me realise that dirt riding is REALLY tiring!
Suzuki RM370, a 400N, then a Yamaha YZ465 - I can't look at those things now without twinges of pain!
BSA DBD34 Gold Star - a rebuild project (in my lounge in London)
Honda RC30 - best bike I've ever ridden, and I've still got it. It sits in my brother's garage, sadly not ridden for a few years
Honda CBR600, Suzuki GSXR600 (both race bikes)
Aprilia's RS125, 250 & RSV1000 (all race bikes)
Moto Guzzi V50
Honda RS250 - one of the slowest bikes I've ever ridden, but had the biggest crash - was hit by a car that was being towed, and they hadn't turned to key on, so the steering was locked on full right lock.
Honda VFR750 - a great allrounder
2 x Honda VTR1000 Firestorms - did 30,000 k on the first one then sold it. About a week later I thought "What did I do that for?", so bought another
Suzuki RG150, another race/trackday bike
Husqvarna 610 Supermotard - a fairly soft motard
Husaberg 650 Supermotard - an extremely crazy motard!!! Soooo much fun!!!
There's probably a few I've forgotten (or wanted to forget!). Now - I ride a 200cc scooter, as its the right tool for my daily commute. It's odd, I can drive a car for years and not break a single law (or at least not get caught!), and I'm a VERY conservative pilot, but put me on two wheels (yes - even my scooter!) and I turn into a hooligan!
Mal