We go through so many stages when we're here. We shed a baby body, go into a child's, from a child to an adult, and adult into old age. Why shouldn't we go one step beyond and shed the adult body and go onto a spiritual plane?

That is what we do. We don't just stop growing; we continue to grow. When we get to the spiritual plane, we keep growing there, too. We go through different stages of development. 

When we arrive, we're burned out. We have to go through a renewal stage, a learning stage, and a stage of decision. We decide when we want to return, where, and for what reasons. Some choose not to come back. They choose to go on another stage of development. And they stay in spirit form . . . some for longer than others before they return. It is all growth and learning . . . continuous growth. Our body is just a vehicle for us while we're here. It is our soul and our spirit that lasts forever.