People living such lives would start dying more frequently between 25 and 35. People in their twenties think they are invincible, so they roll the dice too many

People living such lives would start dying more frequently between 25 and 35. People in their twenties think they are invincible, so they roll the dice too many times, which starts taking it's toll. People in their thirties tend to settle down. I'm pretty sure there could be a Twenty Club for soldiers who have seen war as well.