Why are some people taller than others?

You are quite right that is a big puzzle.

Well, apparently, tall people are more likely to be slim

Why do humans tend to not grow taller than 7 feet? - Quora

Why do some people have bigger masseter (jaw) muscles than others? Are they chewing more often or chewing through harder things than others who have less prominent jaw muscles? - Quora

Book Of Why: Awesome Animal Kingdom (Time For Kids) – BookXcess

Why are some people taller than others? Culture Online - UCL – University College London

Why are some people short and some people tall? - Quora

Why are some people taller than their parents? - The Tech Interactive

How's Your Son Taller Than You?': Kevin Hart's Fans Are Shocked by How Much His Son Hendrix Has Outgrown the Comedian

Margaret Thatcher quote: Let our children grow tall and some taller than others

Why aren't humans bigger and taller? - Quora

How to increase height: Factors that influence growth

Margaret Thatcher Quote: “Let our children grow tall and some taller than others if they have

Why are some people short and some people tall? - Quora

Why some nationalities are getting shorter while the rest get taller

I used to be taller than my friends. Why are they all taller than me now? - Quora