my guess is because mountains are formed from earthquakes etc right? like convergent boundaries. so the two tectonic plates go towards each other like this -><- and they push each other upwards. over time, since the peaks are so high up, whethering carves the peak into a point.
It's pretty undeveloped and the climate isn't favorable for some people to live in. If more cities were built and stores to provide for our needs, the population would likely increase.
