There are many ways I could answer this, but have only recently realized it's not just a profession, but a way of life.
Acting is about magic. It's a spiritual art form that allows us to connect with each other in a unique way. We suspend our disbelief and together, identify and experience the human condition. We seek to temporarily live on the fibers of the imagination and not be deemed insane. It's a way of communicating on a higher level. It's a form of worship. It challenges us to reach within ourselves, find the very heart of living, and connect in a way standard communication cannot.
Reaching this magical place is the adventure I seek and the reason I give myself to acting.
It's a communion on the human experience.