>>2385817>People don't have fingers, ears, noses etc that end up 10X larger and smaller except in the case of extreme genetic diseasesNoses vary a lot, so you're wrong on that. And 10x is an extreme exaggeration, penis sizes average out around 5.2 inches or so, and there has yet to be a legitimate measurement of a 10 inch cock so it's to be assumed that the largest dicks are around 9 inches. That means the largest cocks are only 82% larger, or 0.82x of an average. Micropenises are very rare, about as much as a legit 9 inch cock.
The real reason is that the penis doesn't have any sort of guidance, it's a floppy piece of flesh that doesn't have any real equal on the body. Bones guide finger growth and skulls guide nose and ear growth, etc. The dick just hangs off your crotch, and tons of genetic factors vary the outcome of it, not including proper nutrition during puberty.