Interestingly, free soloing actually eliminates quite a lot of potentially deadly mistakes. Protected climbers die usually when they make stupid mistakes in their protection routine, or when their protection fails in unlucky ways. That can't happen to a free solo climber, since he has no protection to rely on in the first place.
A (sane) free solo climber will only try to free solo a route which he has finished multiple times protected and is absolutely certain his stamina and skills are sufficient to complete, and which has no holds of dubious quality.
If you don't misjudge this, the deadly risks that remain are things you cannot really prepare for, like rockfall, cramps, or holds that come loose due to some invisible crack.
There's no such thing as just going out and soloing a brand new spot, is there? THAT's the kind of risk I have always pictured when hearing about free climbing... and that just doesn't happen?
Total perspective change. Thanks!
The essential principles remain the same: never do a move you're not absolutely certain you can finish, and never climb to a point where your stamina is insufficient to either finish or climb back to a safe resting place. For an onsight route, the two combined mean that you must always be able to climb back because you might encounter a situation where you have no certain moves forward.
Death is everywhere, it seems that he has fully accepted the fact that all people are mortal and like him, you will die too.
Also, I'm pretty sure that for him it isn't about proving things for other people, it's about how climbing makes him feel about himself.
There are a lot of passions that are very safe most of the time yet present life threatening risk in peak doses during small moments of time. E.g. crossing an ocean on a sailboat, backcountry skiing, etc
More importantly: he knows what he cannot climb with sufficient certainty to try free solo.
BASE jumping, while even more dangerous with many outcomes resulting in death, is something I'm considering on trying in the future.
I don't really do it because of the risk. Sure, I love the adrenaline rush and I love doing extreme things, but that's not the core reason. I know many people who have lost a half dozen really good friends each throughout their lives. That is absolutely devastating. Every time there's a fatality, it spreads through the community rather quickly.
I do it because the experience is like no other, being able to fly through the sky (I mean, how can this view[0] not be attractive). It's also an extremely social sport. You get to form close relationships with total strangers rather quickly.
I could also die driving everyday, the odds say I'd have a better chance at dying in a car than skydiving. So there's always the logical route based on historical evidence.