Err, just understand that the world is so huge that it consists of people that do crazy stuff like these...but I guess the thrill is so satisfying that they are willing to do it!
Regarding the question on what to do when you need to go to the toilet, I guess they have plastic bags...it doesn't feel right to just evacuate them all the way down the cliff, right? :P
lol! Howdy lilacse! I'm laughing at your last sentence and thinking about some poor climber getting started at the bottom and being hit with waste from above. That would be bad! Yes, I agree, people do crazy things for the thrill of it I guess, adrenalin junkies I think!