We're highly social animals - I'm told by scientists that what makes us different from other animals is an acute social awareness, which is what has made us so successful.
What I can't completely understand is most other people's fascination with what the famous among us do with their lips and the rest of their bodies. Why do ordinary people become the target of this curiosity simply by virtue of the fact that other people recognise their names and faces but know almost nothing else about them?
The thing is when you're... well-enough known, you get asked to speak places, and they don't really think about whether or not you're qualified. They just want somebody that will be a drawing card for the audience. So it's up to you to decide whether or not it's foolish to get up and speak to these people.
I used to read science fiction a lot, and I still like science fiction when it is a model of how we really are and to see ourselves from another perspective.