No, I did not. They are wrong. That doesn’t mean they always were wrong, always will be wrong, or are wrong everywhere in the universe.
Point to this objective morality. Describe a test for it following the scientific method. Describe in scientific terms the properties of “wrongness”, and how it attaches to an object. If you can’t, it doesn’t objectively exist.
Of course its just as valid. Morality is nothing more (or less) than a choice we as individuals or societies make. There is no definition, and no consequence, for choosing a right over a wrong action except those we impose on ourselves or those society imposes. There is, in short, no god or other force that can tell us what’s right or wrong.
And yet, somehow, we continue to move forward, in general, to societies where people are treated better, where they live more comfortable, more pleasant and generally happier lives. That is because we ditch the prescribed morality of the past, that which taught that people were inferior due to their gender, race, security or what have you.
You don’t want to progress, you think you know “the truth”. You, like Budget Player Cadet, are on the side of the devils in this argument.
You should do the same with everyone you meet, assess who they are and what they believe before giving them responsibility. Because, like it or not, they all gave different moral views, and will act differently.
For what it’s worth, the only times I’d consider it right to hurt someone are in self defence or the defence of another, or if it’s consensual funtimes, such as BDSM sex or a boxing match. Or, thinking about it, if you’re a medical professional who needs to perform a painful procedure or examination. There’s probably others similar to the latter as well.