Yes it is.
Sometimes the ethical thing to do means a sacrifice on our part.
To accomplish what? More suffering?
One example is standing up against injustice. During the civil rights movement in the United States, many activists faced severe repercussions for standing up against racial injustice.
Yes. And the end goal was an increase in well-being for the oppressed.
In fact MLK jr was killed for this.
Yes. And again, his fight was about increasing well-being for the oppressed. To lower the overall suffering.
The bully causes suffering. Standing up against the bully might hurt you in the short term. But you do it end the suffering caused by the bullying.
Another example is rescuing others at personal risk.
"rescue" you say?
Rescue from what? Suffering, by any chance?
And I'm not just talking about firemen and police officers. In wartime or during disasters, individuals often risk their own safety to save others.
And thereby attempt to increase overall well-being / decrease the suffering of those others.
One example is the story of Oskar Schindler during the Holocaust.
Indeed. He was attempting to prevent suffering of hundreds of people.
Really? You don't think things like the command to "love your neighbor as yourself" has any bearing on ethical behavior?
First, that's a variation of the golden rule. And you don't need religion for that. Every civilization known to man has come up with it independently of eachother.
People like to claim this to be some exclusive or original thing of judeo-christian tradition, but it really isn't.
As Christopher Hitchins once said:
there is no good thing you can do in the name of, or by order of, religion that you can't also do regardless of religion.
Religion by no means has a monopoly, or exclusivity, on moral behavior or moral motivation. At all.
IN FACT, I would even say that if you do good "because it's god commandment"... then at that point your action is actually "tainted" and corrupt and it loses any actual moral value. Even though the result remains the same.
There is a big difference between doing good merely because are being obedient to a commandment, or doing good because you actually want to - simply for the sake of doing good.