I think the same way about theatre, you go out there and you are creating a world for a moment that can actually have a real impact on people, present some kind of story that gives you something to think about when you walk away, feeling enriched - if it works out well.
Dealing with poetry is a daunting task, simply because the reason one does it as an editor at all is because one is constantly coming to terms with one's own understanding of how to understand the world.