First, define ‘fair’ as: unbiased.
Next, check if this a MECE question.
The options presented are Mutually Exclusive and Collectively Exhaustive on the question of life’s fairness; it is either one or the other. So yes, it is a MECE question and life is one of the following:
But which one?
What I have personally noticed is that most successful people, more often than not, believe the following statement:
Most people get most of what they deserve.
From that, I hypothesize that most successful people believe life is fair.