That's a pretty cute theme for a t-shirt. It's totally true, as well. You're right about the ego, too. This effort to beat a record is an exercise in ego.

Cavers and climbers are very different sorts of people. I never was a caver. I did a little caving then gave it up, and started to say "I'll go back underground after I'm dead.". I can see the amazing beauty of caves, and the wonder of following an underground watercourse, but I need the light of day to really feel comfortable....never did get comfortable in caves.