Complex sentence: Nearly every character in film, with the notable exception of his main squeeze, tries to disuade Priest from quitting, their chief argument being that dealing and snorting is the best he could ever achieve in life.
Split into simpler sentences: Nearly every character in film, with the notable exception of his main squeeze, tries to disuade Priest from quitting. Their chief argument being that dealing and snorting is the best he could ever achieve in life.