I'm a fan of blogging. As a teacher, I pointed out to students that keeping a journal is a good idea. It is a primary source for historians but also allows one to look back or share it later with family members.
Well, advice is well and good, but I couldn't consistently keep a journal.
I've been able to blog, though.
I know my life will not remain the same. I will have better times and also worse times. I want to look back at this time...what I do, who I do it with, how I felt about it when things are maybe not so good in my future. I don't really look forward to getting really, really old...but it could happen. I'll want to look back at our beautiful home, gardens, flowers, etc.
That doesn't mean that I think I'm going to a nursing home tomorrow. A tornado could hit, whatever. Pictures in an album could go up in smoke. But I would still be able to access my blog (as soon as I managed to buy another computer after whatever disaster hits).
Nothing is certain except that things don't stay the same. I want to remember. My blog is for me, but I like knowing others care:)
I also like knowing others are beginning to document their lives. Nothing stays the same.