I just have a gut instinct that I'm going to do something important for others in this life; but I don't think it's the last time. "Promises to keep, and many miles to go before I sleep"...that's what I feel about this life in particular, and about things beyond it. I do think there's a point at which we can stop incarnating. But I also think it's a choice. Some people who are "in the clear" could choose to come back in order to help others. Or just to enjoy the spice of life.