Although I started out on this one:
.. and it was a great bike;
the BMW F650GS was my big motorcycle love:
Cross continent riding, gravel fun, passenger rides, track days, couriering.. There didn't seem to be anything it didn't do well.
Except going fast straight ahead. I'm a cornering sort of person, so it turned out to be less of an issue than I suspected.
Alas, as this was my day job:
motorcycling grew less and less interesting over the years. Couriering on a motorcycle was a bore compared to the liberty one can take on a pedal bike.. So I kept on pedalling and got enough two wheel action as it was while working. The lack of a local race track was also a heavy influence. Silly lean angles doesn't work well in the long run if staying on public roads.
The current avatar pic was the retirement gift to myself after 8 years of street riding:
Have spent half the riding time off the beaten path since then. Slowly getting better at handling silly steep angles and strange obstacles. It's light enough to be fun while riding up the ~1500 feet local mountains and heavy duty enough to take the beating while slipsliding down again on the near downhill style tracks. Off roading gives much the same extactic joy as track riding used to do on the motorbike!
Lastly, as this is a thread for riders:
Stelvio pass in the Alps. 48 hairpins on one climb!