No, you're just that unimportant.
Maybe to you I'm not important, in which case, I pose to you a similar question to the one BL posed to, well, whoever: Why respond to me at all if I'm not important?
In BL's case it is because he has to have the last word (as shawnfucious has also discovered and labeled as OCD, which I find quite amusing). In your case it's because of nothing except you DO find importance in what I have to say. If you don't, time to stop responding.