Atheism and morality

[Inigo]

So you think an act is right if and only if it is approved of by one's society? That's clearly false and only someone incompetent with moral concepts would think it.
When 'society' disapproved of giving women the vote that didn't make it morally right to deprive them of it, did it?

It did at the time.

Queen Victoria was shocked by women trying to demand the vote. She knew that morally men were the masters, (the bible said so). So trying to gain the vote was immoral.

I am most anxious to enlist everyone who can speak or write to join in checking this mad, wicked folly of 'Women's Rights', with all its attendant horrors, on which her poor feeble sex is bent, forgetting every sense of womanly feelings and propriety. Feminists ought to get a good whipping. Were woman to 'unsex' themselves by claiming equality with men, they would become the most hateful, heathen and disgusting of beings and would surely perish without male protection."

http://blog.biographyonline.net/2007/10/...omens.html

But societies changed, morals improved.

As a result people are more moral now than at any point in history.

If you say 'morals improved' you assume an independent moral standard - a moral standard that is independent of one's society and against which one's societies' norms are assessed. In other words, we morally assess our - and past - societies' beliefs and actions.
There is, for instance, nothing remotely incoherent in wondering whether what your society approves of is really right. On your view that thought would be incoherent. It ins't. Your view is false.
Now, that's a headshot. Your view is false. I just shot it dead. I can shoot it through the head some more, if you like. But kindly recognise that it has just been shot dead and stop bringing it to the party.