What’s the best part and the worst part about being a Project Manager?

As the title asks, what's your best and worst?

Mine, I like the kicking-off new projects because it almost always follows a predictable flow.

The worst is dealing with people who 1) don’t “belive” in project management as if it's a religion (a cult, maybe, but not a religion); and 2) those who don't have time for you, yet you give them your time whenever possible.