Free Dive

This is both fascinating and bizarre.

Watching the video of this man free dive to the bottom of the deepest pool in the world is both mind boggling and incredible, and yet:

1. I don't understand the desire to free dive. I cannot fathom (see what I did there?) the desire to swim as deep and far as possible on a single breath of air while risking your life in order to do so.  And while it's true that there are many other desires that I don't understand (sky diving, marathon running, baking), free diving seems to hold absolutely no reward.  

You can see the bottom of the pool with or without a tank of oxygen. I'm not sure how the lack of life sustaining air makes the experience any more compelling.   

2. Who spends millions building a creepy-ass pool like this? Sure, you might want to build the deepest pool in the world, but does it have to look like the inside of a water treatment plant from a Bond film?