What was the point of making this movie?

Rating: 6/10 (14 April 2014)

It starts off brilliantly as an interesting black-comedy/psychological-thriller satire on the 80's, consumerism, narcissism, vanity, and greed. But then it repeats itself in a cycle of murders and threesomes, ultimately becoming a stillborn and pointless movie.
Christian Bale is fascinatingly creepy and funny (dark) as the vane, greedy and narcissistic investment-banker/psycho-killer, and is the only reason you watch the movie till the end.
Other than being a weak satire, what was the point of the whole ordeal (movie)?