Morals serve a purpose. They are safeguards which lie between instinct and reasoning, and as such, are causal. But neglecting the effect does not negate the relevance of such a morality. Religion, in fact, is the ultimate in moral systemics. Now, its morality infringes on our freedom to explore these issues ourselves.
Some morals are too restrictive.
But all morals are relevant to the mind which has questioned them and still found them to be of use. Some people will try to hand out morals like they're going out of style. Morals are useless to me. Reasoning is much kewler, d00d. Although I am exposed to literally hundreds of bands every year, only occasionally does one of those bands make a really big impact on me.