Damn. I expected more of this site. The ignorance in this thread is staggering. Thanks for reminding me why I often ride alone.
If you doubt the rear brake's contribution to stopping power try getting up to 140 or so and STOP HARD using only the front brake. The effect of the rear brake is more than a shorter stopping distance. It's CONTROL of the motorcycle and in a hard braking scenario is anything more important?
If you're going to be crazy,you have to get paid for it or you'll get locked up.
Hunter S. Thompson