Morality is just the name we give to our concerns about how our actions affect other conscious beings. So yes of course it exists.
We would still be concerned about the implications of our actions on the well-being of other creatures.
Is killing other creatures,for example, for self preservation or for the preservation of our loved ones the moral thing to do? And I don't only mean self defense.
I am only probing Cofty, and I don't have a handle on this topic and not trying to prove you wrong. Post away. I read and think about what is posted. If I don't grasp, explain away.
Morality is not arbitrary, neither is it simply a social construct.
What is it then or give a solid example. All you have said that it is a feeling about our actions as they affect the well being of others. Concern is subjective. You are concerned about how pollution affects fish and me too but I am also concerned about the ocean - not having trash floating around regardless of the fish. Some people won't eat fish or other creatures for moral reasons, others don't care. What concerns are you talking about and based on what?