Is it true that there is no absolute morality?

[Angrboda]

OP Title: Yes, it is true. That does not mean it is arbitrary. 

https://www.merriam-webster.com/thesaurus/arbitrary

What are your trees?

You people keep saying morality is not arbitrary, but you never give me an alternative view.

Morality is an instinct like any other. Just as we have a preference for sweet and fatty foods based on our evolutionary heritage, our moral systems appear to come preloaded with "orientations." These orientations aren't necessarily fixed, objective, and absolute, just as what types of sweet and fatty foods appeal to us aren't fixed, but neither is it arbitrary, meaning that it has no inherent bias towards any perspective. It's not random, in other words.