Kinds of people
Some people want to do things because they are interesting.
Some people want to do things because they work.
Some people want to do things because everyone else is doing them.
And some people are satisfied/scared/shy/lazy and don't do anything.
Think about blogging or buying a new pair of shoes or voting for a candidate or picking one career over another. Different people have very different agendas. The key in understanding someone's actions is understanding their agenda.
That salesperson who does everything by the book is not interested in the thrill of discovery. That retired steel worker that is hesitating to vote for your candidate is wondering what everyone else is going to do. And that unpredictable blogger keeps changing the rules because the rules bore him.