Dale was a hero to many and as with many 'stars', a lot of us felt like we kinda knew him. As for myself, I grew up watching him race and so his death hits harder than the tragedy of earth quakes, etc.
It may not seem fair but it's an emotional response for losing someone that was a part of our lives... albeit second-hand.
I don't think this in any way degrades the deaths of others... it's simply closer to the heart.
I'll miss watching him race.