That life exists.
I am not sure what is meant by Life Domain Family. It may not necessarily have to do with atheism. and nothing with existentialism.
It does no such thing ! You may want to read about philosophy to learn what existentialism is.
Atheists have friends like anyone else; existentialism is irrelevant.
Families of atheists exist.
Atheists believe friends exist.
This does not really have to do with extentialism, But we atheists view sexuality as a healthy part of an adult's life.
We are pretty sure it exists.
As far as I am concerned existentialism plays no part.
Jean-Paul Sartre's first principle of atheistic existentialism is encapsulated in the idea that "existence precedes essence." This means that individuals are not born with a predetermined nature or purpose; instead, they must create their own essence through choices and actions. In the absence of a divine creator, humans bear the responsibility for defining their own values and meaning in life, emphasizing the importance of personal freedom and authenticity.
Jean-Paul Sartre is known as the father of atheistic existentialism. He was a French philosopher, playwright, and novelist who explored themes of freedom, responsibility, and the absence of a higher power in his works.
Humans have values, secularly as well as religious. Religion need not play a part in human values. Existentialism is moot.
Suffering and dying exist. Existentialism has no part in atheism.