I thought the post by JanetGeorge illuminating.
They are fairly stupid creatures (horses, not girls), less controllable than a motor cycle but just as exhilarating to ride.
Like a motor bike they'll buck, they'll top end you, bite you, trash you BUT, I've never ridden a bike which refuses to pass a kid's bicycle lying on the road, or is upset by a kid up a nearby tree or won't start despite being in as new condition and fully fuelled or which goes faster on the way home or apropos nothing just stands on your foot.
. . or perhaps, as a pretty rubbish rider of both, it's just me