well, because we can. I mean, we have some mental buffer to accept the conseuqences.. check deep inside!
I think reacting to amtrak crash makes sense since it moves on rails! how on earth something moving on rails could possibly crashes? doesn't make sense... but cars are different.. if you be honest with yourself you should always wonder how on earth we can get to a point without an accident with cars! think about that.. sorry this is just harsh reality.