Everything we do is motivated by our relationships with other humans. Whether it's positive or not. We are all programmed by experiences... There are obviously exceptions to the rule, but most of our makeup is created by other humans that all contribute to our consciousness. He could have the need for attention that he didn't get as a child or he could just like the adrenaline, but still, he wants to share and is motivated by society's perception... Why else do something that can kill you, unless you want to die. He wanted to be seen and valued.

Performing, and capturing a stunt on video, is to show others his accomplishment. If he didn't care, we wouldn't have seen the video or know who this guy is.

Yes, all humans are the same, driven off chemical reactions. There are variable differences, but generally, we are all the same.