I'm (apparently) notoriously closed and guarded in real life, with my friends often making jokes about how secretive I am. Whether they are sincerely criticizing my apparent 'wall of silence' in regards to my personal life or not, it frustrates me that they perceive me to be so closed off about my life. Although I don't like sharing my emotions in real life, I'm nowhere as cold as they perceive me to be. It's because they don't really care about my life that I don't choose to anything about it. If they want to cover up their own failures by blaming it on me, so be it.
In the internet, however, I am far more open about my life, whether people care or not. Of course, there are darker aspects of me that I do not wish to share to anyone but my closest friends, which I think is quite reasonable, don't you?