Not really when you put it into perspective. How many people even know that your blog exists right now? There have to be hundreds of thousands of blogs out there. Hardly anyone knows any particular one unless it is the blog of a celebrity or something.Even if your blog or Facebook survives, who's going to read it in 150 years? Do you make it a habit to read the diaries of random everyday people from the 1860s? Do you know anyone else who does?
Are there any celebrities blogs anywhere near as interesting as mine?
I read Pepys diary and he died hundreds of years ago