Do you think moral/existential nihilism could be correct?

The main problem with this type of argument is that it assumes a type of dualism that doesn't exist. The meaning of life, even for a predator, is to live that life. We evolved in a community and we have feelings for our families and those who depend upon us. This has continued into the present situation in which the world is now our community. The strain on the individual is showing. But to deny that our humanity grants us a sense of what is right and what is wrong is just false. It takes a disappointed theist to come up with existential nihilism.