No you make perfect sense, you are basically arguing the relativist’s point that nothing is inherently true in the universe and all of our ideas come from our own decisions. I have the stance of a more realist moralist which is the basic idea that morals exist despite what humans decide.
Fore example killing animals without reason is mean and bad, yet Lions eat antelope. Why is this? Well because the lion is killing for food, just as a hunter might do, however the lion only kills what it needs, and such is the law of nature: only take what is needed, never more.
It is bad to be as Aristotle says an “incontinent person” or somebody who pursues things in excess. When you say all things are subjective you are saying that if I go out and kill every animal without reason I can simply say “It’s not bad in my opinion” which is of course silly.
Just because somebody has a personal opinion doesn’t make it true. Truth exists outside of conscious humanity and it is our job to discover, not create, truth.