Everybody is always with some or other ethics. Ethics is the study of the concepts of "good" and "bad".
My ethics is this: "good" is what is good for me, "bad" is what is bad for me. This seems to be such a self-evident truth, that I don't even see how you could consider any other form of ethics, except in the frame of a religious conviction or so.
There is namely only one source of "good" and of "bad": that are my subjective experiences of "good feelings" and "bad feelings". If I wouldn't have those feelings, all actions would be totally indifferent with respect to any "good" or "bad", wouldn't they ?
To a computer, nothing has a meaning of "good" or "bad" I would think. A computer is ethically totally indifferent is my idea (unless you would consider a computer to be a sentient being).
But of course, I would like YOU to adhere to another kind of ethics. I would like you to consider "good" MY advantage, and not YOURS. I would like you to consider "bad" MY disadvantage, and not yours. If I could talk you into such behaviour, I would consider that as good.
And that's the basis of "morality": morality is the behaviour I want others to have that is in my advantage.
I don't want others to steal me, I don't want others to cheat on me, I don't want others to be violent with me, I want others to be generous with me, I want others to be friendly with me ...
All these things is what we usually put into one or other morality.
So of course we are indoctrinated with "morality" from childhood onward. Because others want us to have a moral behaviour.... to their advantage.