In my opinion, environmentalists are supporting the deterioration of mankind. Throughout history, there has been a war to stay alive: the survival of the fittest. Charles Darwin first theorized evolution and natural selection during the 1830's, speculating and later proving that superior species are able to change and adapt to their environment, and will live after the brawl of extinction is fought.
There's one feeling that all extreme sports athletes go through, I pinpoint these guys because they're the most likely to go through it and that's the feeling of adrenalin. Adrenalin is defined as the feeling you get when something exciting happens and you have no knowledge of why it's happening.