[ShizukaMikudou]

In Agnosticism, you are unsure of what you believe in, but refrain from claiming to believe in anything because of that. That is what "not believing in a religion" is.

And yes, many atheists and agnostics do have morals which they regard as instincts, and they follow these instincts, because they believe that their instincts tell them what is morally just, and in this precise way, they regard themselves as their own god.

Nihilism is like the most extreme form of atheism in that yes, it does believe that absolutely nothing is of value and there is nothing else left. Nihilism could easily be, in this way, categorized as a strict subdivision of atheism.

So while they are considered two things, Nihilism, in all its beliefs and worldview, is more like a subdivision of atheism, as is antinatalism. The difference is that atheists actually do believe in a set of laws, which are the religion known as atheism. Atheists generally follow what the individual thinks is right, making the individual his or her own god.