Existentialism is more a trend or tendency that can be found throughout the history of philosophy. Existentialism is hostile towards abstract theories or systems that propose to describe all of the intricacies and difficulties of human life through more-or-less simplistic formulas. Existentialists focus primarily on matters such as choice, individuality, subjectivity, freedom, and the nature of existence itself.
Read Article: What is Existentialism? History of Existentialism, Existentialist Philosophy, Philosophers
On a lighter note, whenever I see the words, “existentialism”, I am reminded of a line from Woody Allen’s movie, “Sleeper” when his futuristic “Miles” character describes his religious beliefs like this:
“I am a teleological existential atheist, which means I believe there is a certain intelligence in the universe…….with the exception of certain parts of New Jersey!” LMAO!