Why do people like Dennett lie and pretend their internal experience isn't happening?

I've never seen anyone so adamantly lie over and over and over about something unless they had a severe bias out of fear. E.g. religious people who will just reel off infinite untruths because they are too scared of the idea of no heaven to be honest.

Everyone like Dennett will always mention nihilism or solipsism somewhere. That is their equivalent of the fear of no heaven that causes religious dishonesty... You are alone you moron, I'm a figment of imagination.