In addition to the unethical nature of profiting from people's deaths, there's the fact that plenty of the stories are NOT examples of mental unfitness. 
 One of the stories used in this Darwin Awards Wiki, about the lawyer and the window, is not about stupidity, it's about plain misfortune: 

 "(1996, Toronto) Police said a lawyer demonstrating the safety of windows in a downtown Toronto skyscraper crashed through a pane of glass with his shoulder and plunged twenty-four floors to his death. A police spokesman said Garry, thirty-nine, fell into the courtyard of the Toronto Dominion Bank Tower as he was explaining the strength of the building's windows to visiting law students. Garry had previously conducted the demonstration of window strength without mishap, according to police reports. The managing partner of the law firm that employed the deceased told the Toronto Sun newspaper that Garry was "one of the best and brightest" members of the two-hundred-man association." 

 So we see that the lawyer had previously demonstrated the window strength without mishap, so he had ever reason to expect the same results. Further, Garry was one of the brightest.  

 What further proof does anybody need that the Darwin Awards are nothing more than laughing at others' misfortune?  Too bad there isn't an award for callousness and shamelessness. N. G. McClernan April 10, 2006