Wow, so much in that to destroy in what was said. A bicycle without
a motor can reach speeds of 35-40mph on a downhill ride. Bicycle V-brakes are designed for that kind of stopping resistence and disc breaks can take even more. This guy clearly doesn't know what he is talking about if he thinks it's suicide. The rest is what he "imagines" and how he and he alone thinks bicycles are "meant to be" used is what I would call "lame".