system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:existentialism

I just watched 2001: Space Odyssey (finally). My friend said I would like it if I was into existentialism, but I never really was able to understand that word. 

side note: I did like it, a lot. Pretty weird though, because I was high and watching it with my parents.
gpt
Without an absolute morality and consciousness, everything becomes relative to the individual.  Whatever moral system or meaning that you give yourself, it is up to you to fully commit to it.

Basically, you are alone in the universe and although what is right and wrong are human constructs, you are ultimately responsible in your own search for meaning.