I thought i'd add my little contribution to this argument inside an argument.
I grew up watching motor racing during the early nineties - death wasnt a part of the sport for me, until Ayrton Senna crashed at Imola.
I was a wholehearted supporter of Damon Hill and Nigel Mansell during thier duels with Ayrton Senna , and at the time of his crash, it didnt actually look ALL that serious. So I would like to share the fact that I cheered when Senna hit the wall, which makes me feel guilty now, but at the time my competitive side took over. Now obviously my cheer turned to deep concern when Sennas car came to rest, but I've always felt a little bit guilty about that moment.
I was in a Grandstand at Abbey corner when Schumacher went off at Silverstone, and then initial "yey" VERY VERY quickly turned to concern, in fact, it was a case of "yeeeohmygodhe'snotgonnastop"
My point though is not that you should cheer when a driver hits the wall, but that you should not judge those that do cheer - sometimes, your reaction is quicker than what is going on in front of you and you wont always think that the worst can happen, in a sport that is constantly getting safer, but will never be truly safe....