Getting inside the mind of a terrorist wasn't difficult at all. Even as children, human beings fabricate elaborate revenge fantasies. We're not a particular species. Check out popular video games.
Growing up, I never gave a thought to being a writer. All I ever wanted to be was a traveler and explorer. Science-fiction allowed me to go places that were otherwise inaccessible, which is why I started reading it.
Keep writing. Try to do a little bit every day, even if the result looks like crap. Getting from page four to page five is more important than spending three weeks getting page four perfect.
Living gives you a better understanding of life. I would hope that my characters have become deeper and more rounded personalities. Wider travels have given me considerably greater insight into how cultural differences affect not only people, but politics and art.
I usually do one con a year as a GoH and try to make the World Fantasy Convention for business purposes. Last year I went to a worldcon for the first time in two decades. I may go again this year.
Advances have fallen, generally, for everything except the biggest potential bestsellers. Given all the changes, both economic and technological, SF hasn't done too badly.
Dawn was written well before 9/11. People speak a lot today about the banality of evil, but not all evil is banal. Some of it is carefully structured and well-thought-out. That's where the real danger lies.
Writing allows me the time to travel and see the world, which is what I always wanted to do. I'd really like to have been Sir Richard Francis Burton, but it's the wrong century.
There's certainly more new SF available than when I started writing. That means there's also more bad SF available. Whether there is also more good is a matter for future historians of the field.
I see the Jedi mission as giving up a normal life in exchange for protecting the innocent. It's a life of sacrifice. There are rewards, but also a certain degree of sterility.