I do not believe that there is a single absolute moral standard that which everyone must ascribe to. Morals are a personal issue, that each individual and societies must determine for themselves.
Morals are not determined in a vacuum. There is a strong genetic component. Your genes make you nature predisposed to helping those who share your genes: your family. There are cultural forces as well. Living in the USA, one is taught that certain behaviors (like polygamy) are immoral while that same behavior is socially acceptable for someone living in Saudi Arabia. Similarly, one’s religious and ethical background impacts the morals one holds. Opinions on the morality of premarital sex and homosexual marriage are very tied to one’s religion.
This diverse tapestry of morals is one key piece of evidence of my belief that there is no moral absolute truth. Much like a single religious truth, a moral truth would require a single correct answer, implying that every other answer is wrong. Condemning entire cultures as moral deviants would require some serious evidence.
The evidence for an absolute moral truth? Well, there isn’t any. Lots of philosophers, from Plato to Thoreau, have proposed the idea. But these merely philosophical arguments, based in rhetoric rather than evidence based. For every absolute proposed, there are always exceptions somewhere.
The evidence in the world is that of diversity. The world is full of diverse cultures and peoples who built productive, fulfilling societies, each with its own set of morals. These moral codes work for them, regardless of being incompatible with the codes of those around them.
This is the crux of the issue. Not having an absolute morality has not caused the world’s civilizations to collapse. It does not imply a lack of morality. Morals that are socially chosen can hold just as much weight as ones imposed from some external source. A moral person is moral, regardless of the source of those morals.
-That is all.