Where is the joy or pleasure in that? It is an obsession - a disorder.
The same can be said about things like skydiving ,adventure seeking,hardcore gaming, book reading or even quilting and gardening.Unless you share their passion you'll probably never understand the drive behind them, why they seek more , new avenues/experience and why people strive to be better at it.
On another note, reading this thread seems strolling the vineyard of sour grapes.