In reply to Blue Straggler:
Shame
now its ending was good enough as you were left hanging wondering on his ability to turn his life arround
However a much stronger ending for me
would have been in the scene about 3 mins before where he is screwing the two prostitutes, there a bit where the camera just momentarily moves into his face while he is thrusting away and there is a very far away look on his face,
had the film ended there , right at where he was lost to his affliction would have been perfect for that film about the human condition