Why suffer the early mornings, the attention to minutiae, the discomfort and pain?  Answer:  All that training enhances a man/woman’s personal capability.  Then, once he/she finds their calling (their way of giving back), they can do so with unerring precision.  And whatever you believe as far as heaven/hell/karma…it has been scientifically proven that giving back is inherently rewarding.  

That’s what all the work is for.  Hone yourself.  Give back.  Repeat.  Die happy.