Free Writing Perspective

Sometimes when thinking about writing in general, odd things will pop into my head. One such thing was me remembering my writing classes I took back in high school. We did many writing exercises that included free writing. One of the shorts I came out with was a memoir based on one of my favorite TV shows, Sliders. It was just a bunch of stuff describing the show's plot and all based on the main charactar.

This thought process led me to realize that all my free writing and journal writing has been first-person. I don't know why I do this but almost all my stories in my journal begin with "I" within the first or second sentence. Is this common? Is your journal writing first person? I'm curious to know.