Originally Posted by puppypilgrim

Gain a better understanding about how bike weight affects performance by reading this:
http://www.smartcycles.com/bike_weight.htm

Weight savings is largely a marketing-driven concept to the consumer. There is far more to gain by losing excess body weight and improving your cardiovascular performance than worrying about extra weight on a bicycle. Tire selection & tire pressure will affect the perceived speed of a bike more than an extra 1.5 lbs shaved off the fork or wheels.

Due to human nature however, we are all susceptible to the belief that spending money on a lighter bike will buy us better performance.