If I were to choose my favorite bike, I'd probably have to go back to be 15 years old again to enjoy it the same way. It was a '72 Honda CL100 (blue). It was my first taste of freedom on the road (well at least for about a 20 or 30 mile radius). It was transportation independent of my parents. I didn't have to rely on anyone else to get me where I wanted to go. Being the scrambler type model I rode it on the street, on trails, through mud, and even jumped out of a few red clay gullies.
I saw one at a swap meet down at Barber Motorsports Park and MDC took my picture with it. I've had several other bikes, but I don't know that I've enjoyed any of them any more than that little Honda.