It's not. Almost all of humanity, every culture now or historical, has agreed on many of these things. Others have very wide support, including universal human rights (which include your rights). You can find many arguments supporting these things, throughout human history. Societies and much of the world agree on them (including universal human rights). Research shows evolutionary advantages and connections to these things, and that animals share them with us.

Ethics and morality are not some arbitrary things we each make up.