Is there anything wrong with the idea that ‘nature’ is not a good justification for anything?

To me, the idea that ‘it’s natural’ can be used as a justification for any behavior, action, or ideology seems very misguided. <br><br>Basic example: Murder is natural. So is having sex with as many people as possible. So is stealing to ensure your survival. Why would ‘naturalness’ then be a positive justification for anything, rather than just a neutral description? <br><br>I.e. ‘It’s natural for human beings to be monogamous’ - even if that were true (it’s not), why does that justify the behavior? Murder is natural. Is it justified then? No. <br><br>On the other hand, I can’t deny that the concept of ‘naturalness’ does have some validity to me, and I think probably to most people. I.e. some things do seem more in tune with what people are meant to be doing by virtue of their biology, and some things seem less in tune with that. <br><br>Is there any way to justify that feeling with regards to human behavior, or should we throw the concept of ‘naturalness’ out the window?