I've been like that too--or tried to be--plenty of times. For me, it was a weird sort of state where yes, I could believe that things might alternate between black & white (like a chess board), but didn't want to accept that black & white might sometimes mix to form grey. Fortunately, my innate love of color kicks in eventually. :-)

Life has a way of kicking that out of you.

I dunno, lots of people cling to the hard edges when life gets troublesome. Belief in definition is comforting.