On the surface, a motorcycle can certainly appear to be one of these. Shiny, loud, fast, appealing to the visceral. Riding one also, a mere twist of the wrist supplies enough thrust to make your sphincter clench and stretch your arms, instant gratification indeed.
But it is the machine's deeper ability to help us find things we didn't even know where there, that separates it from the other time drains. Some realize this through travelling on two wheels, seeing what they have not seen from the best view on the road, others through the trials of competition and yet others through wrenching, repairing and creating in the metal that is motorcycles. And those in the know, know that it is not distraction. It is not hobby.
It is purpose.