A day in the life of an Existentialist (Late)

Last night I had a nightmare. In the dream I died. Right when I died in my dream I woke up. I cant help but wonder why, in that moment, I woke up. Then I came to the realization that I woke up because I don't know what happens next. I went on with my day. Today was my birthday. I didn't care to do anything and I don't know why birthdays are celebrated anyway. My friends believe otherwise and insisted we celebrate. We went to the fair, rode rides, and ate junk food. I began to enjoy myself and actually had some fun. As we were riding the swirl machine, it was as if time stood still for a second. I had this lingering thought in my brain that none of this matters.