I feel like the main point of ethics is the introspection required to understand ones own prejudeces and definitions of moral right or wrongs claims of I will simpl y not do bad have very little meaning when the definition of bad isn't elaborated on
Edit: I mean some people think being trans is a sin does it make it so? No. We like those transphobes who don't bother knowing any better should be aware of potential misjudgements we may subconsciously make when not viewing the entire situation in a spectrum
Studying ethics is at least one of the ways we try to deal with the problem that “I won’t do bad things” means different things to different people. There isn’t a cosmic definition of “bad”.