GRandom pointless ramblings. First it’s dangerous to change gearing and now it’s because one doesn’t have the strength or endurance for stock gearing.

Why are cars outfitted with more gears these days? Why don’t they just make more powerful motors?

Because efficient gearing for the terrain/speed/cadence you ride makes sense. You can use a single speed to ride the mountains, but that rider with “no legs” but gears will catch and surpass you eventually.