It is difficult to understand or have any sympathy for Jordan Belfort.
Belfort (Leonardo DiCaprio) was a greedy, indulgent and narcissistic man who was driven by money and the pursuit of his own happiness.
He had a humble start to his life but once introduced to what money could bring him, he was addicted.
And it wasn't the last thing he became addicted to.
He relentlessly pursued anything that could give him a rush -- from drugs to sex crime to illegal financial activity.