...
I would like to think that luck isn't the only thing separating me from my mortal coil.
Like it or not, luck is one of the biggest factors.
If someone goes on a killing spree, walks in off the street and opens up, killing you 1st, training won't matter.
Multiple killers.
Sniper in a tower.
Etc.
You can train to better your dice roll, but life is still a game of craps.