My journal from Florence is now, since I discovered it again, a great source of empty pages for me, that need to be filled. I have sometimes kept a journal but I never read them again. By the look of things, I don't think anyone will write my biography, and need notes to guide them. When I travel I do carry a notebook and sometimes jot down experiences, but more as a guide to my photos than anything else.
I was recently asked if a blog was like a journal, but I don't see it that way. I write my blog for family and friends who often asked about my life in the United States. Funnily enough, I don't think many look at it, but now I have come to enjoy keeping a blog whether it gets looked at or not. Perhaps it has become a journal after all.