Thousands of individuals go through airport lounges and train seating. We don't want them leaving any residue and traces. If we are deprived of their being and their history, so much the better. The same goes for sites of industrial assembly where human activity must be rigidly constrained and employees are eminently replaceable. The more replaceable people are, the more lightness is applauded.
Race cars tend to be light.
It's often asked why a family home cannot offer the high-performance of a contemporary sports car. It seems like a reasonable thing to ask. The answer to this is found in vehicles that shelter families, such as SUVs, Winnebagos and trailer homes. These are ugly and dangerous cars. They do not merely shelter powerful engines and powerful engineers.