First, to travel, and to see the rest of the world.  I've been to Europe but would like to see more of it.  I'd like to do a barge trip through the various canals in France and Germany.  I've seen most of the United States.  I want to travel across Canada, and I want to live in New Zealand for a while.  I want to eat my way through Japan, France, and Italy. There are a lot of other places I'd like to see--Dubai, Turkey, Jordan (dlish has inspired me!), and Uzbekistan (especially 
Samarkand).  Morocco. I want to sail the South Pacific.  Really, I'm open to travel anywhere.
Then, I want to come back here and own some acreage not too far out of town and live a sustainable lifestyle on said acreage.  I want to build my own home per my own design there, and to be as self-sufficient as possible.  Here I would settle down and have my family. 
Then, at retirement age, I want to join the Peace Corps.  Though this could happen sooner and that would be fine too.