You are missing a fundamental consideration. With ethics, there is a strong implication that others _should_ be acting in a certain away. This is not present in

You are missing a fundamental consideration. With ethics, there is a strong implication that others _should_ be acting in a certain away. This is not present in the same way with things like ones preference for fun activities or a choice of a testing library for a software project. If someone is making an ethical declaration, it is very natural and normal to want to know their reasoning.