A healthy and fully functioning society must allocate its resources among a variety of competing interests, all of which are more or less valid but none of which should take precedence over national security.
I used to suffer from a lot of regret while touring. Regret at having to leave certain places, people and situations, or just a beautiful day.
I was very careful to cast guys who were very good-looking and very fit and who had a certain sense of privilege about them, because with that sense of privilege comes contempt.