Plane crashes, while tragic, don't have the same effect as a fatality on the race track (except for the air race fatality recently). We take for granted these days how "safe" racing anything from go-carts to Funny Cars is but the danger is part of the attraction for spectators and participants alike. The footage of the Indycar crash in Vegas was both horrifying and riveting. Drivers know every time they go on the track what could happen, and maybe they are narcissistic adreline junkies, but so are we.
I salute anyone with the fortitude to go out there and risk life and limb for our entertainment. They earn those big (and not so big) paychecks IMHO.