Although Voldemort has shown both a fear of immortality and a lust for power, he has become a problem chiefly because he’s split his soul into so many pieces that no one can reason with him anymore. Essentially, he has gone dangerously insane.
i. Supporting fact 1: Characteristics before splitting his soul…
ii. Supporting fact 2: Characteristics after splitting his soul…
iii. Supporting fact 3: Now, even his followers can’t reason with him…