Definitely, ethics and aesthetics are different terms. Matters become complicated when people mix these things. You excellently made clear what is legal and what is ethical.
Obviously, everything legal cannot be said ethical. For an example child marriage is still allowed in some parts of the world, which is legal in those parts but it cannot be said ethical as child marriage is very bad for the health of the children.
I think without ethical behavior nothing can make this world a happy place for us, not matter how strong our legal system is. Legal system reduces our freedom while ethical behavior makes us free.
Thanks.