Bicycles have had gears for almost a century, and they allow to tackle hilly areas easily. Also, the Netherlands is notoriously windy, and a headwind is just as difficult as a hill.

No, what makes the Netherlands different is their street design prioritizing safety rather than speed at all costs. When the streets feel safe from speeding drivers, more people choose to ride a bike.

> Bicycles have had gears for almost a century, and they allow to tackle hilly areas easily.

Assuming everyone but you is retarded.