"A Love for the Sport..."

From El Capitan: Historic Feats and Radical Routes - on climbing El Cap:

The climbing itself, the endless coiling of ropes and switching of equipment, the hours and hours of awkward body positions, hauling hundred-pound supply loads and ascending ropes, exposure to the elements and the yawning of space below - it all wears you down relentlessly....A love for the sport, therefore, is a love of extreme physical discomfort and a hunger for jobs so stupidly difficult they can obliterate your self - the ostensible point of the whole enterprise.

If you've ever trained for or climbed a big wall, you know exactly what the author is talking about.