Depends what you mean by adding nothing.
I think nihilism is a pretty concrete position to be in. 2 billion years from now, nothing we’ve done will matter or likely be remembered. On a cosmological scale, that makes our lives pretty pointless. Thats nihilism.
Nihilism doesn’t have to be bad, though. In fact, there’s no good or bad in that statement. Just “will matter” and “won’t matter”. Absurdism is embracing the fact that nothing matters, and doing anyway. Why? Who knows. It tends to be how people stay happy. Do because if you don’t, well… that’s pretty much it isn’t it?
Cosmologically? yes nihilism makes sense.
On a human scale? No, your actions and inactions have rippling consequences on the world around you, and to reject these consequences is to reject responsibility for sharing a world with others, which in my opinion is a selfish and childish thing to do.
Absurdism seems more rational than nihilism on a human scale, since it admits that the world is chaos and to fully embrace this entropy as a means to not take the consequences of life too seriously.
Absurdism is a fantastic coping mechanism for the harsh realities of life. Nihilism really does not accomplish anything, in my opinion.
