Whats the most effective way to shave grams off your drivetrain without sacrificing performance, and why do so many riders still swear by heavy, outdated components when there are clearly better options available? Is it a lack of understanding of the physics behind gear ratios and pedaling efficiency, or are people just too afraid to venture away from the comfort of their trusty old setups? And dont even get me started on the so-called aero benefits of certain components - are they really worth the weight penalty, or is it just marketing hype?